NDLI: High electron injection structure in hybrid solar cells

Content Provider	IEEE Xplore Digital Library
Author	Hung-Chou Liao San-Yuan Chen Chin-Ching Lin Syh-Yuh Cheng
Copyright Year	2008
Description	Author affiliation: Dept. of Mater. Sci. & Eng., Nat. Chiao Tung Univ., Hsinchu (Hung-Chou Liao; San-Yuan Chen) \|\| Mater. & Chem. Res. Labs., Ind. Technol. Res. Inst., Chutung (Chin-Ching Lin; Syh-Yuh Cheng)
Abstract	We evaluate an ordered organic-inorganic solar cell architecture based on CdS QD-decorated ZnO nanorod arrays encased in the hole-conducting polymer Poly(3-hexylthiophene-2,5-diyl) (P3HT). In this work, CdS quantum dot with different sizes were attached to the surface of the nanorods capped with mercaptopropionic acid. The results show that the CdS QDs on the ZnO nanorods increase both the open circuit voltage $(V_{OC})$ and short circuit current density $(J_{SC})$ relative to devices without CdS QDs. A photovoltaic device based that has been decorated with CdS QDs yields power conversion efficiency over 4 times greater than that for a similar device without CdS QDs. The best device yields a short circuit current density of 1.38 mA $cm^{-2}$ under AM1.5 illumination (100 mW $cm^{-2}),$ resulting in a power conversion efficiency of 0.21% The increase shows that the modification with CdS QDs can serve not only as a photosensitizer but mainly as an energy funnel and/or an electronic mediator to significantly improve the electron injection efficiency from P3HT to ZnO nanorods.
Starting Page	285
Ending Page	288
File Size	181699
Page Count	4
File Format	PDF
ISBN	9781424427161
ISSN	10972137
DOI	10.1109/COMMAD.2008.4802148
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-07-28
Publisher Place	Australia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Electrons Photovoltaic cells Zinc oxide Nanoscale devices Short circuit currents Power conversion Building integrated photovoltaics Polymers Quantum dots Voltage CdS QD Hybrid solar cells ZnO nanorod P3HT
Content Type	Text
Resource Type	Article

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