Effects of Surface Treatment on the Performance of PEDOT: PSS/n-GaN Schottky Solar Cells

Qian Feng; Kai Du; Yu Kun Li; Peng Shi; Qing Feng

doi:10.4028/www.scientific.net/AMM.492.331

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 492Effects of Surface Treatment on the Performance of...

Effects of Surface Treatment on the Performance of PEDOT: PSS/n-GaN Schottky Solar Cells

Abstract:

We developed heterojunction-based Schottky solar cells consisting of π-conjugated polymers and n-type GaN. PEDOT: PSS was used as the transparent Schottky contact material. In order to improve the performance of solar cells, the effects of surface treatment on the electrical performance of PEDOT: PSS/n-GaN Schottky contacts were investigated. The Voc increased from 0.52V to 0.62V,0.54V and 0.54V and Isc from 0.33 mA/cm² to 0.45mA/cm²,0.40mA/cm² and 0.35mA/cm² after HCl, HF solution and oxygen plasma treatments. The I-V and the XPS measurements indicated that the barrier height of PEDOT:PSS/n-GaN was increased from 0.62eV to 0.76eV, 0.72eV and 0.70eV and the ideality factor improved from 1.81 to 1.63, 1.67 and 1.73 respectively, which induced the variation of the solar cells characteristics..

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Periodical:

Applied Mechanics and Materials (Volume 492)

Pages:

331-334

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.492.331

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Online since:

January 2014

Authors:

Qian Feng, Kai Du, Yu Kun Li, Peng Shi, Qing Feng

Keywords:

Gallium Nitride (GaN), PEDOT:PSS, Schottky Solar Cell, Surface Treatments

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