Colloidal Nanoparticles for Intermediate Band Solar Cells

Vörös, Márton; Galli, Giulia; Zimanyi, Gergely T.

doi:10.1021/acsnano.5b00332

Title: Colloidal Nanoparticles for Intermediate Band Solar Cells

Journal Article · Thu Jun 04 00:00:00 EDT 2015 · ACS Nano

DOI:https://doi.org/10.1021/acsnano.5b00332· OSTI ID:1370943

Vörös, Márton ^[1]; Galli, Giulia ^[2]; Zimanyi, Gergely T. ^[3]

Univ. of California, Davis, CA (United States); Univ. of Chicago, IL (United States). Inst. for Molecular Engineering
Univ. of Chicago, IL (United States). Inst. for Molecular Engineering; Argonne National Lab. (ANL), Lemont, IL (United States)
Univ. of California, Davis, CA (United States)

We report that the Intermediate Band (IB) solar cell concept is a promising idea to transcend the Shockley–Queisser limit. Using the results of first-principles calculations, we propose that colloidal nanoparticles (CNPs) are a viable and efficient platform for the implementation of the IB solar cell concept. We focused on CdSe CNPs and we showed that intragap states present in the isolated CNPs with reconstructed surfaces combine to form an IB in arrays of CNPs, which is well separated from the valence and conduction band edges. We demonstrated that optical transitions to and from the IB are active. We also showed that the IB can be electron doped in a solution, e.g., by decamethylcobaltocene, thus activating an IB-induced absorption process. Lastly, our results, together with the recent report of a nearly 10% efficient CNP solar cell, indicate that colloidal nanoparticle intermediate band solar cells are a promising platform to overcome the Shockley–Queisser limit.

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Research Organization:: Energy Frontier Research Centers (EFRC) (United States). Center for Advanced Solar Photophysics (CASP)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF)

Grant/Contract Number:: AC52-06NA25396; AC02-05CH11231; DMR-1035468

OSTI ID:: 1370943

Journal Information:: ACS Nano, Vol. 9, Issue 7; Related Information: CASP partners with Los Alamos National Laboratory (lead); University of California, Irvine; University of Colorado; Colorado School of Mines; George Mason University; Los Alamos National Laboratory; University of Minnesota; National Renewable Energy Laboratory; ISSN 1936-0851

Publisher:: American Chemical Society (ACS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 35 works

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37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
36 MATERIALS SCIENCE
bsorption
density functional theory
doping
intermediate band
nanocrystal
nanoparticle solid
solar cell
solar (photovoltaic)
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solid state lighting
bio-inspired
electrodes - solar
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Title: Colloidal Nanoparticles for Intermediate Band Solar Cells

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