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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
chemical engineering
Three-dimensional core-shell hybrid solar cells via controlled in situ materials engineering
Nano Letters, Volume 12, No. 7, Year 2012
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Description
Three-dimensional core-shell organic-inorganic hybrid solar cells with tunable properties are demonstrated via electropolymerization. Air-stable poly(3,4-ethylenedioxythiophene) (PEDOT) shells with controlled thicknesses are rapidly coated onto periodic GaAs nanopillar arrays conformally, preserving the vertical 3D structure. The properties of the organic layer can be readily tuned in situ, allowing for (1) the lowering of the highest occupied molecular orbital level (|δE| ∼ 0.28 eV), leading to the increase of open-circuit voltage (V OC), and (2) an improvement in PEDOT conductivity that results in enhanced short-circuit current densities (J SC). The incorporation of various anionic dopants in the polymer during the coating process also enables the tailoring of the polymer/semiconductor interface transport properties. Systematic tuning of the device properties results in a J SC of 13.6 mA cm -2, V OC of 0.63 V, peak external quantum efficiency of 58.5%, leading to a power conversion efficiencies of 4.11%. © 2012 American Chemical Society.
Authors & Co-Authors
Mariani, Giacomo
United States, Los Angeles
University of California, Los Angeles
Wang, Yue
United States, Los Angeles
University of California, Los Angeles
Wong, Ping Show
United States, Los Angeles
University of California, Los Angeles
Lech, Andrew T.
United States, Los Angeles
University of California, Los Angeles
Hung, Chung Hong
United States, Los Angeles
University of California, Los Angeles
Shapiro, Joshua
United States, Los Angeles
University of California, Los Angeles
Prikhodko, Sergey
United States, Los Angeles
University of California, Los Angeles
El-Kady, Maher F.
United States, Los Angeles
University of California, Los Angeles
Egypt, Giza
Faculty of Science
Kaner, Richard B.
United States, Los Angeles
University of California, Los Angeles
Huffaker, Diana L.
United States, Los Angeles
University of California, Los Angeles
Statistics
Citations: 41
Authors: 10
Affiliations: 2
Identifiers
Doi:
10.1021/nl301251q
ISSN:
15306984
e-ISSN:
15306992
Research Areas
Environmental