Name: harvesting solar energy by means of charge-separating nanocrystals and their solids
Uploaded: 2012-08-23T12:03:00
Description: Watch this Scientific Journal Video about Harvesting Solar Energy by Means of Charge-Separating Nanocrystals and Their Solids at JoVE.com

Vi vil gerne anerkende Dr. Felix Castellano (BGSU) og NR Neal for rådgivning og værdifulde diskussioner. Vi takker obor &quot;Material Networks&quot; program og Bowling Green State University for finansiel støtte. Dette arbejde blev delvist støttet af NSF under Award CHE - 1.112.227.

1. Syntese af ZnSe Core nanokrystaller 8 <ol><li> Place 7,0 g ODA og en magnetisk omrørerstav til en trehalset kolbe. </li><li> I en separat kolbe, kombinere 0,063 g selen og 2,4 ml TOP, og der tilsættes en magnetisk omrøringsstang. Blandingen af ​​TOP og selen skal afgasses under vakuum i 30 minutter. </li><li> Degas ODA i 90 minutter ved 120 ° C, og derefter sat under Ar flow med en bred glas udstødning. </li><li> Heat ODA til 300 ° C og, og injicere Se blanding. Lad temperaturen tilbage til 300...

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	<li>Kamat, P. V., Flumiani, M., Dawson, A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Metal+-+Metal+and+Metal-+Semiconductor+Composite+Nanoclusters.">Metal - Metal and Metal- Semiconductor Composite Nanoclusters.</a> Colloids Surf. A. 202, 269-279 (2002).</li><li>Dawson, A., Kamat, P. V. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Complexation+of+Gold+Nanoparticles+with+Radiolytically+Generated+Thiocyanate+Radicals+((SCN)2.">Complexation of Gold Nanoparticles with Radiolytically Generated Thiocyanate Radicals ((SCN)2.</a> J. Phys. Chem. B. 105, 960-966 (2001).</li><li>Borensztein, Y., Delannoy, L., Djedidi, A., Barrera, R. G., Louis, C. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Monitoring+of+the+Plasmon+Resonance+of+Gold+Nanoparticles+in+Au/TiO2+Catalyst+under+Oxidative+and+Reducing+Atmospheres.">Monitoring of the Plasmon Resonance of Gold Nanoparticles in Au/TiO2 Catalyst under Oxidative and Reducing Atmospheres.</a> J. Phys. Chem. C. 114, 9008 (2010).</li><li>Acharya, K. P., Khnayzer, R. S., O'Connor, T., Diederich, G., Kirsanova, M., Klinkova, A., Roth, D., Kinder, E., Imboden, M., Zamkov, M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+Role+of+Hole+Localization+in+Sacrificial+Hydrogen+Production+by+Semiconductor-Metal+Heterostructured+Nanocrystals.">The Role of Hole Localization in Sacrificial Hydrogen Production by Semiconductor-Metal Heterostructured Nanocrystals.</a> Nano Lett. 11, 2919 (2011).</li><li>Amirav, L., Alivisatos, A. P. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Photocatalytic+Hydrogen+Production+with+Tunable+Nanorod+Heterostructures.">Photocatalytic Hydrogen Production with Tunable Nanorod Heterostructures.</a> J. Phys. Chem. Lett. 1, 1051-1054 (2010).</li><li>Pattantyus-Abraham, A. G., Kramer, I. J., Barkhouse, A. R., Wang, X., Konstantatos, G., Debnath, R., Levina, L., Raabe, I., Nazeeruddin, M. K., Gratzel, M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Depleted-Heterojunction+Colloidal+Quantum+Dot+Solar+Cells.">Depleted-Heterojunction Colloidal Quantum Dot Solar Cells.</a> ACS Nano. 4, 3374-3380 (2010).</li><li>Kinder, E., Moroz, P., Diederich, G., Johnson, A., Kirsanova, M., Nemchinov, A., O'Connor, T., Roth, D., Zamkov, M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Fabrication+of+All-Inorganic+Nanocrystal+Solids+through+Matrix+Encapsulation+of+Nanocrystal+Arrays.">Fabrication of All-Inorganic Nanocrystal Solids through Matrix Encapsulation of Nanocrystal Arrays.</a> J. Amer. Chem. Soc. 133, 20488-20499 (2011).</li><li>Davide, C. P., Liberato, M., Lucia, C. M., Stefan, K., Cinzia, G., Marinella, S., Angela, A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Shape+and+Phase+Control+of+Colloidal+ZnSe+Nanocrystals.">Shape and Phase Control of Colloidal ZnSe Nanocrystals.</a> Chem. Mater. 17, 1296-1306 (2005).</li><li>Carbone, L., Nobile, C., de Giorgi, M., Sala, F. D., Morello, G., Pompa, P., Hytch, M., Snoeck, E., Fiore, A., Franchini, I. R., Nadasan, M., Silvestre, A. F., Chiodo, L., Kudera, S., Cingolani, R., Krahne, R., Manna, L. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Synthesis+and+Micrometer-Scale+Assembly+of+Colloidal+CdSe/CdS+Nanorods+Prepared+by+a+Seeded+Growth+Approach.">Synthesis and Micrometer-Scale Assembly of Colloidal CdSe/CdS Nanorods Prepared by a Seeded Growth Approach.</a> Nano Lett. 7, 2942-2950 (2007).</li><li>Habas, S. E., Yang, P., Mokari, T. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Selective+Growth+of+Metal+and+Binary+Metal+Tips+on+CdS+Nanorods.">Selective Growth of Metal and Binary Metal Tips on CdS Nanorods.</a> J. Am. Chem. Soc. 130, 3294-3295 (2008).</li><li>Costi, R., Saunders, A. E., Elmalem, E., Salant, A., Banin, U. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Visible+Light-Induced+Charge+Retention+and+Photocatalysis+with+Hybrid+CdSe-Au+Nanodumbbells.">Visible Light-Induced Charge Retention and Photocatalysis with Hybrid CdSe-Au Nanodumbbells.</a> Nano Lett. 8, 637-641 (2008).</li><li>Hines, M. A., Scholes, G. D. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Colloidal+PbS+Nanocrystals+with+Size-Tunable+Near-Infrared+Emission:+Observation+of+Post-Synthesis+Self-Narrowing+of+the+Particle+Size+Distribution.">Colloidal PbS Nanocrystals with Size-Tunable Near-Infrared Emission: Observation of Post-Synthesis Self-Narrowing of the Particle Size Distribution.</a> Adv. Mater. 15, 1844-1849 (2003).</li><li>Pietryga, J. M., Werder, D. J., Williams, D. J., Casson, J. L., Schaller, R. D., Klimov, V. I. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Utilizing+the+Lability+of+Lead+Selenide+to+Produce+Heterostructured+Nanocrystals+with+Bright,+Stable+Infrared+Emission.">Utilizing the Lability of Lead Selenide to Produce Heterostructured Nanocrystals with Bright, Stable Infrared Emission.</a> J. Am. Chem. Soc. 130, 4879-4885 (2008).</li><li>Tang, J., Kemp, K. W., Hoogland, S., Jeong, K. S., Liu, H., Levina, L., Furukawa, M., Wang, X., Debnath, R., Cha, D. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Colloidal-quantum-dot+photovoltaics+using+atomic-ligand+passivation.">Colloidal-quantum-dot photovoltaics using atomic-ligand passivation.</a> Nat. Mat. 10, 765-771 (2011).</li></ol>

Denne undersøgelse viser, hvordan sammensatte arkitekturer af uorganiske nanokrystaller kan anvendes til at opnå en rumlig adskillelse af fotoinducerede gebyrer. Især tillader disse kompositter finjustering af fordelingen af ​​gebyrer på tværs af de to domæner, som derefter rådighed til at udføre enten fotokatalytiske eller solceller funktion. For eksempel kan effektive photocatalysts foretages, hvis donor-og acceptor nanocrystal domæner er indbygget i en enkelt nanopartikel. De energetik af et sådant syst...

<table border="1"><tbody><tr><td> Navn på reagenset </td><td> Firma </td><td> Katalognummer </td><td> Kommentarer (valgfrit) </td></tr><tr><td> octadecylamin (ODA), 90% </td><td> Fisher </td><td> AC12932-0050 </td><td></td></tr><tr><td> selen (Se), 200 mesh </td><td> Acros </td><td> AC19807-2500 </td><td></td></tr><tr><td> tri-n-octylphosphine (TOP), 97% </td><td> Strem </td><td> 15-6655 </td><td> Luftfølsomme </td></tr><tr><td> diethylzink (Et2Zn), 10 vægt-%. </td><td> Aldrich </td><td> 22.080 </td><td> Air Sensitive, lysfølsom </td></tr><tr><td> methanol, 99,8% vandfri </td><td> Aldrich </td><td> 179.337 </td><td></td></tr><tr><td> toluen, 99,8% vandfri </td><td> Aldrich </td><td> 244.511 </td><td></td></tr><tr><td> tri-n-octylphosphine oxid (TOPO), 99% </td><td> Aldrich </td><td> 223.301 </td><td></td></tr><tr><td> n-octadecylphosphonsyre (ODPA), 98% </td><td> PCI Synthesis </td><td> 104.224 </td><td></td></tr><tr><td> hexylphosphonic acid (HPA), 98% </td><td> PCI Synthesis </td><td> 4721-24-8 </td><td></td></tr><tr><td> cadmiumoxid (CDO), 99,99% </td><td> Aldrich </td><td> 202.894 </td><td></td></tr><tr><td> svovl (S), 99,999% </td><td> Acros </td><td> AC19993-0500 </td><td> Stærk lugt </td></tr><tr><td> 11-mercaptoundecanoic acid (MUA), 95% </td><td> Aldrich </td><td> 450.561 </td><td></td></tr><tr><td> kaliumhydroxid (KOH) </td><td> Acros </td><td> AC13406-0010 </td><td></td></tr><tr><td> chloroform </td><td> VWR </td><td> EM-CX1059-1 </td><td></td></tr><tr><td> blyoxid (PbO), 99,999% </td><td> Aldrich </td><td>32.306-1KG </td><td></td></tr><tr><td> 1-octadecen (ODE), 90% </td><td> Aldrich </td><td> O806-25ML </td><td></td></tr><tr><td> oleinsyre (OA), 90% </td><td> Aldrich </td><td> O1008-1G </td><td></td></tr><tr><td> bis (trimethylsilyl) sulfid (TMS), syntetisk kvalitet </td><td> Aldrich </td><td> 283.134-25G </td><td> Luftfølsomt, stærk lugt, højreaktive </td></tr><tr><td> acetone </td><td> EMD Chemicals </td><td> AX0118-2 </td><td></td></tr><tr><td> cadmium acetat </td><td> Acros </td><td> AC31713-5000 </td><td></td></tr><tr><td> natriumsulfidnonahydrat (Na 2 S • 9H 2 O), 98% </td><td> Alfa Aesar </td><td> CB1100945 </td><td> Lysfølsomme </td></tr><tr><td> hexadecyltrimethyl-ammoniumbromid (CTAB), 99% </td><td> Sigma </td><td> H6269-100G </td><td></td></tr><tr><td> oleylamin, 70% </td><td> Aldrich </td><td> O7805-5G </td><td></td></tr><tr><td> diphenylether </td><td> Alpha Aesar </td><td> 101-84-8 </td><td></td></tr><tr><td> 1,2-hexadecanediol </td><td> TCI </td><td> 6920-24-7 </td><td></td></tr><tr><td> Pt (II)-acetylacetonat, 97% </td><td> Aldrich </td><td> 282782-5G </td><td></td></tr><tr><td> isopropanol, 99,8% vandfri </td><td> Acros </td><td> AC32696-0025 </td><td></td></tr><tr><td> titantetrachlorid (TiCl4), 99,9% </td><td> Aldrich </td><td> 697.079-25G </td><td> Yderst luftfølsomme </td></tr><tr><td> titandioxid, DSL 90T </td><td> DyeSol </td><td> DSL 90T </td><td></td></tr><tr><td> terpineol </td><td> MP Biomedical </td><td> 98-55-5 </td><td></td></tr><tr><td> 3-mercaptopropionsyre (MPA), 99% </td><td> Alfa Aesar </td><td> A10435 </td><td> Stærk lugt </td></tr><tr><td> octan, vandfri, 99% </td><td> Aldrich </td><td> 412.236 </td><td></td></tr></tbody></table>

harvesting solar energy by means of charge-separating nanocrystals and their solids

Konjunktion forskellige halvledermaterialer i en enkelt nano-komposit giver syntetiske midler til udvikling af nye optoelektroniske materialer, der tilbyder en overlegen kontrol over den geografiske fordeling af ladningsbærere tværs materielle grænseflader. Da denne undersøgelse viser, kan en kombination af donor-acceptor nanocrystal (NC) domæner i en enkelt nanopartikel føre til realisering af effektive fotokatalytiske 1-5 materialer, medens en lagdelt samling af donor-og acceptor-lignende nanokrystaller film giver anledning til solceller materialer. Oprindeligt dokument fokuserer på syntesen af ​​sammensatte uorganiske nanokrystaller, der omfatter lineært stablet ZnSe, cd&#39;er og Pt-domæner, der tilsammen fremmer fotoinducerede ladningsadskillelse. Disse strukturer anvendes i vandige opløsninger til fotokatalyse af vand under solstråling, hvilket resulterer i produktionen af H2-gas. At øge fotoinduceret adskillelse afafgifter, er en nanorod morfologi med en lineær gradient hidrører fra en indre elektrisk felt anvendes 5. De inter-domæne energetik derefter optimeret til at drive photogenerated elektroner mod Pt katalytiske sted samtidig udstødning hullerne til overfladen af ​​ZnSe domæner for offer regeneration (via methanol). Her viser vi, at den eneste effektive måde at producere brint er at anvende elektrondonerende ligander til at passivere de overfladetilstande ved tuning energiniveau tilpasning ved halvleder-ligand interface. Stabil og effektiv reduktion af vand er tilladt af disse ligander på grund af den kendsgerning, at de udfylder stillinger i valensbåndet af halvleder-domænet, hvilket forhindrer energetiske huller fra nedbrydning den. Specifikt viser vi, at energien af ​​hullet overføres til ligandenhed, forlader halvleder domæne funktionelle. Dette gør det muligt for os at vende tilbage hele nanocrystal-ligand systemet til en fungerende stat, når liganderne nedbrydes, Ved blot at tilføje nye ligander til systemet 4. For at fremme en fotovoltaisk ladningsadskillelse, bruger vi et sammensat to-lags solid PBS og TiO 2 film. I denne konfiguration er fotoinducerede elektroner injiceres i TiO 2 og efterfølgende opsamles af en FTO elektrode, medens hullerne kanaliseres til en Au-elektrode via PBS lag 6.. At udvikle den sidstnævnte indfører vi en halvleder Matrix Indkapslede nanocrystal Arrays (SMENA) strategi, som gør det muligt limning PbS NCs ind i det omkringliggende matrix af CdS halvleder. Som følge heraf udviser fabrikerede faststoffer fremragende termisk stabilitet, tilskrives heteroepitaxial struktur nanocrystal-matrix interfaces, og viser overbevisende lys-høstpræstation i prototype solceller 7.

Watch this Scientific Journal Video about Harvesting Solar Energy by Means of Charge-Separating Nanocrystals and Their Solids at JoVE.com

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

En generel strategi for udvikling af charge-adskillelse halvleder nanocrystal kompositter deployerbare for solenergi produktion er præsenteret. Vi viser, at samling af donor-acceptor nanocrystal domæner i et enkelt nanopartikel geometri giver anledning til en fotokatalytisk funktion, mens løs-heterojunctions af donor-acceptor nanocrystal film kan anvendes til fotovoltaisk energiomdannelse.

Høst Solar energi ved hjælp af Charge-separerende nanokrystaller og deres Solids

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

Research

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Engineering

Fabrication of Nano-engineered Transparent Conducting Oxides by Pulsed Laser Deposition

Fremstilling af Nano-manipuleret ledende gennemsigtige Oxider af Impuls Laser Deposition

Nanosecond Pulsed  Laser Deposition (PLD) in the presence of a background gas allows the deposition  of metal oxides with tunable morphology, structure, ...

Making Record-efficiency SnS Solar Cells by Thermal Evaporation and Atomic Layer Deposition

Gør Record-effektivitet SnS Solceller ved Termisk fordampning og Atomic Layer Deposition

Tin sulfide (SnS) is a candidate absorber material for Earth-abundant, non-toxic solar cells. SnS offers easy phase control and rapid growth by congruent ...

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

Integration af Light fældefangst Sølv Nanostrukturer i hydrogeneret Mikrokrystallinsk silicium solceller ved Transfer Printing

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

Quantitative Hardness Measurement by Instrumented AFM-indentation

Kvantitativ Hårdhed Måling af Instrumenteret AFM-indrykning

In this work, a combination of amplitude-modulated non-contact atomic force microscopy and atomic force spectroscopy is applied for instrumented hardness ...

Monovalent Cation Doping of CH3NH3PbI3 for Efficient Perovskite Solar Cells

Monovalent Cation Doping of CH3NH3PbI3 for Efficient Perovskite Solar Cells

Monovalent kation doping af CH<sub&gt; 3</sub&gt; NH<sub&gt; 3</sub&gt; PBI<sub&gt; 3</sub&gt; Til Effektive Perovskite solceller

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

High Temperature Fabrication of Nanostructured Yttria-Stabilized-Zirconia (YSZ) Scaffolds by In Situ Carbon Templating Xerogels

High Temperature Fabrication of Nanostructured Yttria-Stabilized-Zirconia YSZ Scaffolds by In Situ Carbon Templating Xerogels

Høj temperatur Fabrikation af nanostrukturerede yttriastabiliseret-Zirconia (YSZ) Stilladser ved<em&gt; In Situ</em&gt; Carbon Templatering Xerogeler

We demonstrate a method for the high temperature fabrication of porous, nanostructured yttria-stabilized-zirconia (YSZ, 8 mol% yttria - 92 mol% zirconia) ...

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

Godt justeret lodret orienterede ZnO Nanorod Arrays og deres anvendelse i omvendt lille molekyle solceller

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

Indoor Experimental Assessment of the Efficiency and Irradiance Spot of the Achromatic Doublet on Glass (ADG) Fresnel Lens for Concentrating Photovoltaics

Indoor Experimental Assessment of the Efficiency and Irradiance Spot of the Achromatic Doublet on Glass ADG Fresnel Lens for Concentrating Photovoltaics

Indendørs eksperimentelle vurdering af effektiviteten og irradians Spot af den akromatisk Doublet på glas (ADG) Fresnel Lens for koncentration af solceller

We present a method to characterize achromatic Fresnel lenses for photovoltaic applications. The achromatic doublet on glass (ADG) Fresnel lens is ...

An Efficient Method for Selective Desalination of Radioactive Iodine Anions by Using Gold Nanoparticles-Embedded Membrane Filter

En effektiv metode til selektiv afsaltning af radioaktivt jod anioner ved hjælp af guld nanopartikler-Embedded membranfilter

Here, we demonstrate a detail protocol for the preparation of nanomaterials-embedded composite membranes and its application to the efficient and ...

Developing High Performance GaP/Si Heterojunction Solar Cells

Udvikle højtydende hul/Si Heterojunction solceller

To improve the efficiency of Si-based solar cells beyond their Shockley-Queisser limit, the optimal path is to integrate them with III-V-based solar ...