Improved Energy Conversion Efficiency of ZnO/Polythiophene Solar Cell in Ga-Doped ZnO Nanorod Array Photoanode

doi:10.1007/s40242-016-6195-2

Chemical Research in Chinese Universities ›› 2016, Vol. 32 ›› Issue (6): 979-984.doi: 10.1007/s40242-016-6195-2

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Improved Energy Conversion Efficiency of ZnO/Polythiophene Solar Cell in Ga-Doped ZnO Nanorod Array Photoanode

WU Jie, LIU Huanhuan, YUAN Long, HOU Changmin

State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China

Received:2016-05-12 Revised:2016-06-22 Online:2016-12-01 Published:2016-09-12
Contact: HOU Changmin, E-mail:houcm@jlu.edu.cn E-mail:houcm@jlu.edu.cn
Supported by:
Supported by the "Twelfth Five Year" Project of Science and Technology Research of the Education Department of Jilin Province, China(No.2015-466) and the Natural Science Fund of Jilin Provincial Science & Technology Department, China (No.20160101326JC).

Abstract

Abstract:

We reported the fabrication and doping effect of Ga-doped ZnO nanorods/electropolymerized polythio-phene(e-PT) hybrid photovoltaic(h-PV) devices. Ga-Doped ZnO nanorod array photoanode devices were fabricated via hydrothermally growing nanorods on sol-gel spin-coating ZnO seed layer, and then the nanorod array was immersed into a thiophene solution to yield a thin polythiophene film by electrochemically polymerization. Afterwards, a thin layer of Al was deposited on the surface of polythiophene to make an electrode for photovoltaic measurement. The ZnO nanorods with different Ga-doping contents were characterized by means of X-ray diffraction(XRD), scanning electron micrograph(SEM) and X-ray photoelectron spectroscopy(XPS). Photovoltaic J-V characterization was performed on the e-PT/ZnO bilayer and bulk heterojunction(BHJ) devices. Though the unsubstituted polythiophene is not an ideal polymer material for solar cells with high power conversion efficiency, it is a sound model for the study on the effect of dopant in hybrid materials. The results indicate that doping Ga can substantially improve the power conversion efficiency of the ZnO-polythiophene solar cell.

Key words: Solar cell, Energy conversion, Ga-Doped ZnO

WU Jie, LIU Huanhuan, YUAN Long, HOU Changmin. Improved Energy Conversion Efficiency of ZnO/Polythiophene Solar Cell in Ga-Doped ZnO Nanorod Array Photoanode[J]. Chemical Research in Chinese Universities, 2016, 32(6): 979-984.

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Improved Energy Conversion Efficiency of ZnO/Polythiophene Solar Cell in Ga-Doped ZnO Nanorod Array Photoanode

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