Title :
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
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 (SiOx-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 SiOx-Si surface is boosted significantly to 11.3%. It is also found that the SiOx-Si cell exhibits a much better diode rectifying behavior and the SiOx-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;
Conference_Titel :
Photovoltaic Specialists Conference (PVSC), 2012 38th IEEE
Conference_Location :
Austin, TX
Print_ISBN :
978-1-4673-0064-3
DOI :
10.1109/PVSC.2012.6318170
