High electron injection structure in hybrid solar cells

Hung Chou Liao*, San-Yuan Chen, Chin Ching Lin, Syh Yuh Cheng

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

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(VOC)and short circuit current density(JSC)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 mAcm-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.

Original languageEnglish
Title of host publicationProceedings of the 2008 Conference on Optoelectronic and Microelectronic Materials and Devices, COMMAD'08
Pages285-288
Number of pages4
DOIs
StatePublished - 1 Dec 2008
Event2008 Conference on Optoelectronic and Microelectronic Materials and Devices, COMMAD'08 - Sydney, NSW, Australia
Duration: 28 Jul 20081 Aug 2008

Publication series

NameConference on Optoelectronic and Microelectronic Materials and Devices, Proceedings, COMMAD

Conference

Conference2008 Conference on Optoelectronic and Microelectronic Materials and Devices, COMMAD'08
CountryAustralia
CitySydney, NSW
Period28/07/081/08/08

Keywords

  • CdS QD
  • Hybrid solar cells
  • P3HT
  • ZnO nanorod

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    Liao, H. C., Chen, S-Y., Lin, C. C., & Cheng, S. Y. (2008). High electron injection structure in hybrid solar cells. In Proceedings of the 2008 Conference on Optoelectronic and Microelectronic Materials and Devices, COMMAD'08 (pp. 285-288). [4802148] (Conference on Optoelectronic and Microelectronic Materials and Devices, Proceedings, COMMAD). https://doi.org/10.1109/COMMAD.2008.4802148