Name: well-aligned vertically oriented zno nanorod arrays and their application in inverted small molecule solar cells
Uploaded: 2018-04-25T12:30:00
Description: Watch this Scientific Journal Video about Well-aligned Vertically Oriented ZnO Nanorod Arrays and their Application in Inverted Small Molecule Solar Cells at JoVE.com

The authors would like to thank the National Science Council of China for the financial support of this research under Contract No. MOST 106-2221-E-239-035, and MOST 106-2119-M-033-00.

1. Growth of AZO Sputtered Seed Layer on ITO Substrate
<ol>
	<li>Stick 4 anti-corrosion tape pieces (0.3 x 1.5 cm) on one side of the indium tin oxide (ITO) substrate to form a square (1.5 x 1.5 cm). Put the ITO into hydrochloric acid for 15 min to etch the exposed area of ITO.</li>
	<li>Remove the tape and clean the sample using a sonicator; sonicate with deionized (DI) water, acetone, ethanol, and isopropanol in turn for 30 min each. Blow-dry the patterned ITO with a compressed nitrogen gun.</li>
	<li>Attach the clea...

<ol>
	<li>Dou, L., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Tandem+polymer+solar+cells+featuring+a+spectrally+matched+low-bandgap+polymer.">Tandem polymer solar cells featuring a spectrally matched low-bandgap polymer.</a> Nat. Photonics. 6 (3), 180-185 (2012).</li><li>You, J., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Metal+Oxide+Nanoparticles+as+an+Electron-Transport+Layer+in+High+Performance+and+Stable+Inverted+Polymer+Solar+Cells.">Metal Oxide Nanoparticles as an Electron-Transport Layer in High Performance and Stable Inverted Polymer Solar Cells.</a> Adv. Mater. 24 (38), 5267-5272 (2012).</li><li>Dou, L., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Systematic+Investigation+of+Benzodithiophene-+and+Diketopyrrolopyrrole-Based+Low-Bandgap+Polymers+Designed+for+Single+Junction+and+Tandem+Polymer+Solar+Cells.">Systematic Investigation of Benzodithiophene- and Diketopyrrolopyrrole-Based Low-Bandgap Polymers Designed for Single Junction and Tandem Polymer Solar Cells.</a> J. Am. Chem. Soc. 134 (24), 10071-10079 (2012).</li><li>Li, G., Zhu, R., Yang, Y. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Polymer+solar+cells.">Polymer solar cells.</a> Nat. Photonics. 6 (3), 153-161 (2012).</li><li>You, J., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=A+polymer+tandem+solar+cell+with+10.6%+power+conversion+efficiency.">A polymer tandem solar cell with 10.6% power conversion efficiency.</a> Nat. Commun. 4, 1446 (2013).</li><li>Chen, J. D., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Single-Junction+Polymer+Solar+Cells+Exceeding+10%+Power+Conversion+Efficiency.">Single-Junction Polymer Solar Cells Exceeding 10% Power Conversion Efficiency.</a> Adv. Mater. 27 (6), 1035-1041 (2015).</li><li>Zhang, H., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Developing+high-performance+small+molecule+organic+solar+cells+via+a+large+planar+structure+and+an+electron-withdrawing+central+unit.">Developing high-performance small molecule organic solar cells via a large planar structure and an electron-withdrawing central unit.</a> Chem. Commun. 53, 451-454 (2017).</li><li>Zhou, H., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Conductive+Conjugated+Polyelectrolyte+as+Hole-Transporting+Layer+for+Organic+Bulk+Heterojunction+Solar+Cells.">Conductive Conjugated Polyelectrolyte as Hole-Transporting Layer for Organic Bulk Heterojunction Solar Cells.</a> Adv. Mater. 26 (5), 780-785 (2014).</li><li>Lin, M. Y., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Enhance+the+light-harvesting+capability+of+the+ITO-free+inverted+small+molecule+solar+cell+by+ZnO+nanorods.">Enhance the light-harvesting capability of the ITO-free inverted small molecule solar cell by ZnO nanorods.</a> Opt. Express. 24 (16), 17910-17915 (2016).</li><li>Liu, Y., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Solution-processed+small-molecule+solar+cells:+breaking+the+10%+power+conversion+efficiency.">Solution-processed small-molecule solar cells: breaking the 10% power conversion efficiency.</a> Sci. Rep. 3, 3356 (2013).</li><li>Farahat, M. E., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Toward+environmentally+compatible+molecular+solar+cells+processed+from+halogen-free+solvents.">Toward environmentally compatible molecular solar cells processed from halogen-free solvents.</a> J. Mater. Chem. A Mater. Energy Sustain. 4 (19), 7341-7351 (2016).</li><li>Lin, M. Y., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Plasmonic+ITO-free+polymer+solar+cell.">Plasmonic ITO-free polymer solar cell.</a> Opt. Express. 22 (S2), A438-A445 (2014).</li><li>Donato, A., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=RF+sputtered+ZnO-ITO+films+for+high+temperature+CO+sensors.">RF sputtered ZnO-ITO films for high temperature CO sensors.</a> Thin Solid Films. 517 (22), 6184-6187 (2009).</li><li>Lin, M. Y., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Sol-gel+processed+CuOx+thin+film+as+an+anode+interlayer+for+inverted+polymer+solar+cells.">Sol-gel processed CuOx thin film as an anode interlayer for inverted polymer solar cells.</a> Org. Electron. 11 (11), 1828-1834 (2010).</li><li>Vandewal, K., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=On+the+origin+of+the+open-circuit+voltage+of+polymer-fullerene+solar+cells.">On the origin of the open-circuit voltage of polymer-fullerene solar cells.</a> Nat. Mater. 8, 904-909 (2009).</li><li>Sharma, R., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=X-ray+diffraction:+a+powerful+method+of+characterizing+nanomaterials.">X-ray diffraction: a powerful method of characterizing nanomaterials.</a> Recent Research in Science and Technology. 4 (8), 77-79 (2012).</li><li>Huggett, J. M., Shaw, H. F. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Field+emission+scanning+electron+microscopy+a+high-resolution+technique+for+the+study+of+clay+minerals+in+sediments.">Field emission scanning electron microscopy a high-resolution technique for the study of clay minerals in sediments.</a> Clay Miner. 32, 197-203 (1997).</li><li>Lou, S., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Laser+beam+homogenizing+system+design+for+photoluminescence.">Laser beam homogenizing system design for photoluminescence.</a> Appl. Opt. 53 (21), 4637-4644 (2014).</li><li>Huang, J. S., Lin, C. F. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Influences+of+ZnO+sol-gel+thin+film+characteristics+on+ZnO+nanowire+arrays+prepared+at+low+temperature+using+all+solution-based+processing.">Influences of ZnO sol-gel thin film characteristics on ZnO nanowire arrays prepared at low temperature using all solution-based processing.</a> J. Appl. Phys. 103, 014304 (2008).</li><li>Leung, S. F., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Light+Management+with+Nanostructures+for+Optoelectronic+Devices.">Light Management with Nanostructures for Optoelectronic Devices.</a> J. Phys. Chem. Lett. 5, 1479-1495 (2014).</li><li>Lee, C. Y., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=White-light+electroluminescence+from+ZnO+nanorods/polyfluorene+by+solution-based+growth.">White-light electroluminescence from ZnO nanorods/polyfluorene by solution-based growth.</a> Nanotechology. 20 (42), (2009).</li></ol>

By utilizing the NRs interlayer, both the Jsc and the FF of the devices can be improved. However, the surface roughness of NRs will also influence the subsequent processes. Thus, the orientation and the surface morphology of the NRs should be carefully manipulated. For a long time, the sol-gel processed ETL such as TiO2 and ZnO were commonly used in PSCs due to their simple procedures. However, the crystallization of sol-gel processed layers is generally of the amorphous type, and the surface morpho...

Organic photovoltaic (OPV) devices have recently undergone remarkable developments in the application of renewable energy sources. Such organic devices have many advantages, including solution-process compatibility, low cost, light weight, flexibility, etc.1,2,3,4,5 Up until now, polymer solar cells (PSCs) with a PCE of more than 10% have been developed by utilizing the conjugated polymers blended with PC71BM6. Compared to polymer-based PSCs, small molecule-based OPVs (SM-OPVs) have attracted more attention when it comes to fabricating OPVs due to their several distinct advantages, including well-defined chemical structures, facile synthesis and purification, and generally higher open-circuit voltages (Voc)7,8,9. At present, a 2-D structure conjugated small molecule SMPV1 (2,6-Bis[2,5-bis(3-octylrhodanine)-(3,3-dioctyl-2,2&#39;:5,2&#39;&#39;-terthiophene)]-4,8-bis((5-ethylhexyl)thiophen-2-yl)benzo[1,2-b:4,5-b&#39;]dithiophene) with BDT-T (benzo[1,2-b:4,5-b&#39;]dithiophene) as the core unit and 3-octylrodanine as the electron-withdrawing end-group10 has been designed and used to blend with PC71BM for promising sustainable OPVs application. The PCE of conventional small molecule solar cells (SM-OPVs) based on SMPV1 blended with PC71BM has reached more than 8.0%10,11.
In the past, PSCs could be enhanced and optimized simply by adjusting the thickness of the active layer. However, unlike PSCs, SM-OPVs in general have a shorter diffusion length, which greatly limits the thickness of the active layer. Hence, to further increase the short current density (Jsc) of SM-OPVs, utilizing the nano-structure12 or NRs9 to improve optical absorption of SM-OPVs became necessary.
Among these methods, the anti-reflection NRs structure is generally effective for light harvesting of the active layer over a broad range of wavelengths; therefore, knowing how to grow well-aligned vertically oriented zinc oxide (ZnO) NRs is very critical. The surface roughness of the seed layer below the ZnO NRs layer has a great influence on the orientation of the NR arrays; therefore, in order to deposit well-oriented NRs, the crystallization of the seed layer needs to be precisely controlled9.
In this work, the AZO films are prepared by theRadio-Frequency (RF) sputtering technique. Compared with other techniques, RF sputtering is known to be an efficient technology that is transferable to industry for it is a reliable deposition technique, which allows the synthesis of high purity, uniform, smooth, and self-sustainable AZO thin films to grow over large area substrates. Utilizing the RF sputtering deposition enables the forming of high quality AZO films that exhibit high crystallization with reduced roughness of surface. Therefore, in the subsequent growth layer, the orientations of the NRs are highly aligned, even more so when compared to ZnO films prepared by the sol-gel method. Using this technique, the PCE of the inverted small molecule solar cells based on well-aligned vertically oriented ZnO NR arrays can reach 6.01%.

<table>
	<tbody>
		<tr>
			<td>AZO target</td>
			<td>Ultimate Materials Technology Co., Ltd.</td>
			<td>none</td>
			<td>AZO (2 wt% Al2O3 in ZnO) , 3&#8221;&#968;x 3mmt 
			+ 3mmt Cu B/P + Bonding</td>
		</tr>
		<tr>
			<td>SMPV1</td>
			<td>Luminescence Technology Corp.</td>
			<td>1651168-29-4</td>
			<td>2,6-Bis[2,5-bis(3-octylrhodanine)-(3,3-dioctyl-2,2&#39;:5,2&#39;&#39;-terthiophene)]-4,8-bis((5-ethylhexyl)thiophen-2-yl)benzo[1,2-b:4,5-b&#39;]dithiophene</td>
		</tr>
		<tr>
			<td>RF sputtering system</td>
			<td>Kao Duen Technology Co., Ltd</td>
			<td>none</td>
			<td>http://www.kaoduen.com.tw/index.php?action=product</td>
		</tr>
		<tr>
			<td>Zinc Acetate Dihydrate</td>
			<td>J. T. Baker</td>
			<td>5970456</td>
			<td>4.39 g</td>
		</tr>
		<tr>
			<td>Monoethanolamine</td>
			<td>J. T. Baker</td>
			<td>141435</td>
			<td>1.22 g</td>
		</tr>
		<tr>
			<td>2-methoxyethanol</td>
			<td>Sigma-Aldrich</td>
			<td>109864</td>
			<td>40 mL</td>
		</tr>
		<tr>
			<td>Zinc Nitrate Hexahydrate</td>
			<td>J. T. Baker</td>
			<td>10196186</td>
			<td>1.49 g</td>
		</tr>
		<tr>
			<td>Hexamethylenetetramine</td>
			<td>Sigma-Aldrich</td>
			<td>100-97-0</td>
			<td>0.7 g</td>
		</tr>
		<tr>
			<td>Indium tin oxide (ITO)</td>
			<td>RiTdisplay</td>
			<td>none</td>
			<td>coated glass substrates (&#60;10 &#937; sq&#8211;1)</td>
		</tr>
		<tr>
			<td>AFM</td>
			<td>Veeco</td>
			<td>Innova SPM</td>
			<td></td>
		</tr>
		<tr>
			<td>SEM</td>
			<td>FEI</td>
			<td>Nova 200 NanoSEM</td>
			<td>operation voltage: 10 kV</td>
		</tr>
		<tr>
			<td>XRD</td>
			<td>Bruker</td>
			<td>D8 X-ray diffractometer</td>
			<td>2&#952; range: 10&#8211;90 &#176;; step size: 0.008 &#176;</td>
		</tr>
		<tr>
			<td>PL</td>
			<td>Horiba</td>
			<td>Jobin-Yvon HR800</td>
			<td>excitation source: 325 nm UV Laser 20 mW</td>
		</tr>
		<tr>
			<td>solar simulator</td>
			<td>Newport</td>
			<td>91192A</td>
			<td>AM 1.5G</td>
		</tr>
		<tr>
			<td>Precision Semiconductor Parameter Analyzer</td>
			<td>Keysight Technologies</td>
			<td>Agilent 4156C</td>
			<td>sweep from -1 to +1 V</td>
		</tr>
		<tr>
			<td>toluene</td>
			<td>Sigma-Aldrich</td>
			<td>108-88-3</td>
			<td>1 mL</td>
		</tr>
		<tr>
			<td>PC71BM</td>
			<td>Sigma-Aldrich</td>
			<td>609771-63-3</td>
			<td>11.25 mg</td>
		</tr>
		<tr>
			<td>Thermal evaporation system</td>
			<td>Kao Duen Technology Co., Ltd</td>
			<td>Kao Duen PVD System</td>
			<td>http://www.kaoduen.com.tw/index.php?action=product</td>
		</tr>
		<tr>
			<td>HCl</td>
			<td>Sigma-Aldrich</td>
			<td>7647-01-0</td>
			<td></td>
		</tr>
		<tr>
			<td>MoO3</td>
			<td>Alfa Aesar</td>
			<td>1313-27-5</td>
			<td>99.50%</td>
		</tr>
		<tr>
			<td>silver ingot</td>
			<td>ADMAT Inc.</td>
			<td>none</td>
			<td>100.00%</td>
		</tr>
		<tr>
			<td>Thin Film Deposition Controller</td>
			<td>INFICON</td>
			<td>XTC</td>
			<td></td>
		</tr>
		<tr>
			<td>anti-corrosion tape (Polyimide Film)</td>
			<td>3M Taiwan Corporation</td>
			<td>none</td>
			<td>http://solutions.3m.com.tw/wps/portal/3M/zh_TW/InsulatingTape/home/product/Polyimide/</td>
		</tr>
		<tr>
			<td>spin-coater</td>
			<td>Chemat Technology, Inc</td>
			<td>KW-4A</td>
			<td>http://www.chemat.com/chematscientific/KW-4A.aspx</td>
		</tr>
	</tbody>
</table>

well-aligned vertically oriented zno nanorod arrays and their application in inverted small molecule solar cells

This manuscript describes how to design and fabricate efficient inverted solar cells, which are based on a two-dimensional conjugated small molecule (SMPV1) and [6,6]-phenyl-C71-butyric acid methyl ester (PC71BM), by utilizing ZnO nanorods (NRs) grown on a high quality Al-doped ZnO (AZO) seed layer. The inverted SMPV1:PC71BM solar cells with ZnO NRs that grew on both a sputtered and sol-gel processed AZO seed layer are fabricated. Compared with the AZO thin film prepared by the sol-gel method, the sputtered AZO thin film exhibits better crystallization and lower surface roughness, according to X-ray diffraction (XRD) and atomic force microscope (AFM) measurements. The orientation of the ZnO NRs grown on a sputtered AZO seed layer shows better vertical alignment, which is beneficial for the deposition of the subsequent active layer, forming better surface morphologies. Generally, the surface morphology of the active layer mainly dominates the fill factor (FF) of the devices. Consequently, the well-aligned ZnO NRs can be used to improve the carrier collection of the active layer and to increase the FF of the solar cells. Moreover, as an anti-reflection structure, it can also be utilized to enhance the light harvesting of the absorption layer, with the power conversion efficiency (PCE) of solar cells reaching 6.01%, higher than the sol-gel based solar cells with an efficiency of 4.74%.

The layered structure of the devices consisted of an ITO substrate/AZO (40 nm)/ZnO NRs layer, SMPV1:PC71BM (80 nm)/MoO3 (5 nm)/Ag (150 nm) as shown in Figure 1. In general, the AZO or ZnO seed layer is widely used to function as the electron transport layer (ETL) in PSCs devices. Apart from PSCs, SM-OPVs usually have a shorter active layer, limited by the shorter diffusion length8. Hence, to further improve the li...

Watch this Scientific Journal Video about Well-aligned Vertically Oriented ZnO Nanorod Arrays and their Application in Inverted Small Molecule Solar Cells at JoVE.com

Well-aligned Vertically Oriented ZnO Nanorod Arrays and their Application in Inverted Small Molecule Solar Cells

This manuscript describes how to design and fabricate efficient inverted SMPV1:PC71BM solar cells with ZnO nanorods (NRs) grown on a high quality Al-doped ZnO (AZO) seed layer. The well-aligned vertically oriented ZnO NRs exhibit high crystalline properties. The power conversion efficiency of solar cells can reach 6.01%.

This manuscript describes how to design and fabricate efficient inverted solar cells, which are based on a two-dimensional conjugated small molecule ...

The overall goal of this research is to observe the optical and electrical effects of small molecular solar cells using well-aligned vertically oriented zinc oxide nanorods. Demonstrating the NR growth procedure will be Shang-Hsuan Wu, a research assistant from our lab. A PhD candidate, Widhya Budiawan, will demonstrate device fabrication and measurement.This method can help answer key questions in the energy harvesting field such as how to increase efficiency of cells and organic photovoltaic devices. The main advantage of this technique is that the process is very low-cost and very compatible with most of the electronic devices. Gather the materials to prepare the substrates.There should be a sonicator and sources of deionized water, acetone, ethanol, and isopropanol. Also have anti-corrosion tape and a hydrochloric acid bath. Obtain a substrate and begin work.This idium tin oxide substrate measures approximately 1.5 centimeters squared. Apply anti-corrosion tape to form a square on one of its sides. At this point, put the substrate into hydrochloric acid to etch it.After 15 minutes, retrieve the substrate. Before proceeding, remove the anti-corrosion tape from the substrate. Then put the substrate into a beaker of deionized water.Move the beaker to a sonicator and begin sonication. After 30 minutes.

Research

JoVE Journal

Engineering

Harvesting Solar Energy by Means of Charge-Separating Nanocrystals and Their Solids

Conjoining different semiconductor materials in a single nano-composite provides synthetic means for the development of novel optoelectronic materials ...

Ultrahigh Density Array of Vertically Aligned Small-molecular Organic Nanowires on Arbitrary Substrates

In  recent years &pi;-conjugated  organic semiconductors have emerged as the active material in a number of  diverse applications including large-area, ...

Synthesis and Characterization of High c-axis ZnO Thin Film by Plasma Enhanced Chemical Vapor Deposition System and its UV Photodetector Application

In this study, zinc oxide (ZnO) thin films with high c-axis (0002) preferential orientation have been successfully and effectively synthesized onto ...

Integration of Light Trapping Silver Nanostructures in Hydrogenated Microcrystalline Silicon Solar Cells by Transfer Printing

One of the potential applications of metal nanostructures is light trapping in solar cells, where unique optical properties of nanosized metals, commonly ...

Preparation of ZnO Nanorod/Graphene/ZnO Nanorod Epitaxial Double Heterostructure for Piezoelectrical Nanogenerator by Using Preheating Hydrothermal

Well-aligned ZnO nanostructures have been intensively studied over the last decade for remarkable physical properties and enormous applications. Here, we ...

Printing Fabrication of Bulk Heterojunction Solar Cells and In Situ Morphology Characterization

Printing Fabrication of Bulk Heterojunction Solar Cells and In Situ Morphology Characterization

Polymer-based materials hold promise as low-cost, flexible efficient photovoltaic devices. Most laboratory efforts to achieve high performance devices ...

Digital Printing of Titanium Dioxide for Dye Sensitized Solar Cells

Silicon solar cell manufacturing is an expensive and high energy consuming process. In contrast, dye sensitized solar cell production is less ...

Monovalent Cation Doping of CH3NH3PbI3 for Efficient Perovskite Solar Cells

Monovalent Cation Doping of CH3NH3PbI3 for Efficient Perovskite Solar Cells

Here, we demonstrate the incorporation of monovalent cation additives into CH3NH3PbI3 perovskite in order to adjust the optical, excitonic, and electrical ...

Electrospinning of Photocatalytic Electrodes for Dye-sensitized Solar Cells

This work demonstrates a protocol to fabricate a fiber-based photoanode for dye-sensitized solar cells, consisting of a light-scattering layer made of ...

In Situ Monitoring of the Accelerated Performance Degradation of Solar Cells and Modules: A Case Study for Cu(In,Ga)Se2 Solar Cells

In Situ Monitoring of the Accelerated Performance Degradation of Solar Cells and Modules: A Case Study for CuIn,GaSe2 Solar Cells

The levelized cost of electricity (LCOE) of photovoltaic (PV) systems is determined by, among other factors, the PV module reliability. Better prediction ...