Facile fabrication of CdS-poly(3-hexylthiophene) hybrid film with improved photo-current response for heterojunction solar cells

Huimin JIA, Weiwei HE, Yidong ZHANG, Yan LEI, Yong XIANG, Shu ZHANG, Zhi ZHENG*

*Corresponding author for this work

Research output: Journal PublicationsJournal Article (refereed)peer-review

7 Citations (Scopus)

Abstract

CdS nanostructured thin films have been directly fabricated on indium-tin oxide (ITO) glass substrates through a one-step solvothermal process involving a cadmium nanocrystal layer and sulfur powder in N,N-dimethyl formamide (DMF). Poly(3-hexylthiophene) (P3HT) was then infiltrated into the CdS framework. The CdS film and the CdS-P3HT hybrid film were characterized by X-ray diffraction (XRD), atomic force microscopy (AFM), scanning electron microscopy (SEM), photoluminescence spectroscopy (PL) and UV-vis spectroscopy. CdS-P3HT hybrid film exhibited a wider absorption in the solar spectrum and stronger photo-current response and external quantum efficiency than a pure CdS and P3HT film. Hybrid solar cell devices have been constructed based on the CdS-P3HT hybrid film with structure ITO-CdS-P3HT-Au. The effects of sulfur sources, solvent and thickness of elemental cadmium films on the photovoltaic performance of CdS-P3HT hybrid solar cells were assessed.

Original languageEnglish
Pages (from-to)3017-3023
Number of pages7
JournalNew Journal of Chemistry
Volume37
Issue number10
DOIs
Publication statusPublished - 1 Oct 2013
Externally publishedYes

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