11.3% efficient planar Si-PEDOT: PSS hybrid solar cell with a thin interfacial oxide

Author

He, Lining ; Jiang, Changyun ; Wang, Hao ; Lei, Hong ; Lai, Donny ; Rusli

fYear

2012

fDate

3-8 June 2012

Abstract

Hybrid solar cells are fabricated based on heterojunction between planar n-type Si and a p-type polymer, poly (3,4-ethylene-dioxythiophene): polystyrenesulfonate (PEDOT: PSS). The effect of hydrogen-terminated (H-Si) and oxide-terminated (SiO_x-Si) Si surface on the cell performance are investigated. Compared to cells with H-Si surface that exhibits a power conversion efficiency (PCE) of 0.04%, the PCE of the cells with SiO_x-Si surface is boosted significantly to 11.3%. It is also found that the SiO_x-Si cell exhibits a much better diode rectifying behavior and the SiO_x-Si surface bonding results in a favorable band alignment in the Si/PEDOT interface for photo-excited carrier separation.

Keywords

elemental semiconductors; semiconductor heterojunctions; silicon; solar cells; band alignment; diode rectifying behavior; efficiency 11.3 percent; heterojunction; hydrogen-terminated silicon surface; oxide-terminated silicon surface; p-type polymer; photo-excited carrier separation; planar n-type silicon; planar silicon-PEDOT:PSS hybrid solar cell; poly(3,4-ethylene-dioxythiophene):polystyrenesulfonate; power conversion efficiency; surface bonding; Heterojunctions; Nanowires; Photovoltaic cells; Polymers; Silicon; Silicon; band alignment; hybrid solar cell; organic material; surface termination;

fLanguage

English

Publisher

ieee

Conference_Titel

Photovoltaic Specialists Conference (PVSC), 2012 38th IEEE

Conference_Location

Austin, TX

ISSN

0160-8371

Print_ISBN

978-1-4673-0064-3

Type

conf

DOI

10.1109/PVSC.2012.6318170

Filename

6318170