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Title: Amorphous-Silicon / Polymer Solar Cells and Key Design Rules for Hybrid Solar Cells

Abstract

Hybrid solar cells combine the advantages of organic and inorganic materials. We report on the fabrication and performance of hydrogenated amorphous silicon (a-Si:H)/poly(3-hexylthiophene) (P3HT) and a-Si:H/poly(2-methoxy-5-(2{prime}-ethyl-hexyloxy)-1,4-phenylenevinylene) (MEH-PPV) solar cells. The a-Si:H/P3HT system is found to be almost as efficient as titania/P3HT systems. However, the a-Si:H/MEH-PPV system exhibits poorer efficiency vis-a-vis a-Si:H/P3HT and titania/MEH-PPV. This is hypothesized to be due to enhanced energy transfer from MEH-PPV to a-Si:H, coupled with inefficient backward hole transfer, due to the small offset between the highest occupied molecular orbital (HOMO) of MEH-PPV and the valence band edge of a-Si:H, and the extended valence bandtail states in a-Si:H.

Authors:
; ; ; ;
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
943995
DOE Contract Number:  
AC36-99-GO10337
Resource Type:
Conference
Resource Relation:
Conference: [Proceedings] 2006 IEEE 4th World Conference on Photovoltaic Energy Conversion (WCPEC-4), 7-12 May 2006, Waikoloa, Hawaii
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 36 MATERIALS SCIENCE; DESIGN; EFFICIENCY; ENERGY CONVERSION; ENERGY TRANSFER; FABRICATION; PERFORMANCE; SILICON; SOLAR CELLS; VALENCE; Solar Energy - Photovoltaics; Silicon Materials and Devices

Citation Formats

Gowrishankar, V, Scully, S R, McGehee, M D, Wang, Q, and Branz, H. Amorphous-Silicon / Polymer Solar Cells and Key Design Rules for Hybrid Solar Cells. United States: N. p., 2006. Web. doi:10.1109/WCPEC.2006.279419.
Gowrishankar, V, Scully, S R, McGehee, M D, Wang, Q, & Branz, H. Amorphous-Silicon / Polymer Solar Cells and Key Design Rules for Hybrid Solar Cells. United States. doi:10.1109/WCPEC.2006.279419.
Gowrishankar, V, Scully, S R, McGehee, M D, Wang, Q, and Branz, H. Sun . "Amorphous-Silicon / Polymer Solar Cells and Key Design Rules for Hybrid Solar Cells". United States. doi:10.1109/WCPEC.2006.279419.
@article{osti_943995,
title = {Amorphous-Silicon / Polymer Solar Cells and Key Design Rules for Hybrid Solar Cells},
author = {Gowrishankar, V and Scully, S R and McGehee, M D and Wang, Q and Branz, H},
abstractNote = {Hybrid solar cells combine the advantages of organic and inorganic materials. We report on the fabrication and performance of hydrogenated amorphous silicon (a-Si:H)/poly(3-hexylthiophene) (P3HT) and a-Si:H/poly(2-methoxy-5-(2{prime}-ethyl-hexyloxy)-1,4-phenylenevinylene) (MEH-PPV) solar cells. The a-Si:H/P3HT system is found to be almost as efficient as titania/P3HT systems. However, the a-Si:H/MEH-PPV system exhibits poorer efficiency vis-a-vis a-Si:H/P3HT and titania/MEH-PPV. This is hypothesized to be due to enhanced energy transfer from MEH-PPV to a-Si:H, coupled with inefficient backward hole transfer, due to the small offset between the highest occupied molecular orbital (HOMO) of MEH-PPV and the valence band edge of a-Si:H, and the extended valence bandtail states in a-Si:H.},
doi = {10.1109/WCPEC.2006.279419},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2006},
month = {1}
}

Conference:
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