High-Efficiency Planar Thin-Film Si/PEDOT: PSS Hybrid Solar Cell

作者：Wang Hao; Wang Jianxiong; Prakoso Ari Bimo; Hong Lei; Tan Yew Heng; Tan Chuan Seng; Rusli R

来源：IEEE Journal of Photovoltaics, 2016, 6(1): 217-222.

DOI：10.1109/JPHOTOV.2015.2491606

• Heterojunctions
• organic-inorganic hybrid materials
• photovoltaic cells
• solar energy

We study planar Si/PEDOT:PSS hybrid solar cells fabricated using silicon thin films of various thicknesses through a simple spin-coating process. The effects of the Si absorber thickness (T) on the performance of the hybrid cells are investigated. Average power conversion efficiencies (PCE) of 5.0%, 6.2%, 7.7%, and 8.2% have been achieved for T of 2.2, 5.5, 10.6, and 15.5 mu m, respectively. It is found that the hybrid cell with T = 15.5 mu m is able to generate a large short-circuit current density (J(sc)) of 20.4 mA/cm(2), which is about 78% of that measured for a reference bulk Si cell. Optical simulation is also performed to theoretically investigate the light harvesting characteristics of the hybrid cells. It is found that J(sc) increases with T and saturates at about T = 10-15 mu m. By adopting a cell structure where the junction is situated at the back to minimize optical loss in PEDOT: PSS, a J(sc) of 30.3 mA/cm(2) can be achieved. It is predicted that the simple planar Si/PEDOT: PSS cell using only 15-mu m-thick of Si thin film, without the incorporation of nanostructures for light trapping, can deliver a PCE of over 13%.

• 出版日期2016-1
• 单位南阳理工学院