Micro-textured conductive polymer/silicon heterojunction photovoltaic devices with high efficiency

Ting Gang Chen*, Bo Yu Huang, En Chen Chen, Peichen Yu, Hsin-Fei Meng

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

121 Scopus citations

Abstract

In this work, hybrid heterojunction solar cells are demonstrated based on a conjugate polymer poly(3,4-ethylenedioxy-thiophene):poly(styrenesulfonate) (PEDOT:PSS) directly spun-cast on micro-textured n-type crystalline silicon wafers. The fabrication conditions suggest that the organic coverage on the micro-textured surface is excellent and key to achieve high efficiency, leading to an average power conversion efficiency of 9.84. A one-dimensional drift-diffusion model is then developed based on fitting the device characteristics with experimentally determined PEDOT:PSS parameters and projects an ultimate efficiency above 20 for organic/inorganic hybrid photovoltaics. The simulation results reveal the impacts of defect densities, back surface recombination, doping concentration, and band alignment.

Original languageEnglish
Article number033301
JournalApplied Physics Letters
Volume101
Issue number3
DOIs
StatePublished - 16 Jul 2012

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