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A prototype of three dimensional transparent current collector with enhanced charge collection

GUANGWU YANG1,2,* , FUZHEN ZHAO1, BING HE1, WENYUE GUO1,2, XIAOQING LU1, QINGZHONG XUE1,2

Affiliation

  1. College of Science, China University of Petroleum, Qingdao, 266580, PR China
  2. Key Laboratory of New Energy Physics & Materials Science in Universities of Shandong, China University of Petroleum, Qingdao, 266580, PR China

Abstract

We report in this paper a prototype of three dimensional transparent current collector (3D TCC) wit h enhanced charge collection, which is achieved by growing low density and large diameter ZnO microrod arrays on fluorinated tin oxide (FTO) substrates. Structure, morphology, electrical and optical properties of 3D TCC are discussed. The charge collection properties of this novel 3D TCC are studied by comparing it with those of conventional FTO for use as a current collector in dye sensitized solar cells (DSCs). The electrochemical impedance spectroscopy analysis reveals that the electron transport, electr on lifetime, effective diffusion length and the electron collection efficiency are increased, while the c harge recombination is reduced, resulting in the remarkably enhanced power conversion efficiency of 7.17%, higher by 17% than conventional DSCs using FTO glass. These results indicate that the proposed 3D TCC can be considered as a superior electrode for various types of photovoltaic devices..

Keywords

Three dimensional, Transparent current collector, Zinc oxide microrod, Dye sensitized solar cell, Charge collection.

Citation

GUANGWU YANG, FUZHEN ZHAO, BING HE, WENYUE GUO, XIAOQING LU, QINGZHONG XUE, A prototype of three dimensional transparent current collector with enhanced charge collection, Optoelectronics and Advanced Materials - Rapid Communications, 10, 5-6, May-June 2016, pp.405-409 (2016).

Submitted at: Jan. 15, 2015

Accepted at: June 9, 2016