Enhanced Light Absorption of Silicon Nanotube Arrays for Organic/Inorganic Hybrid Solar Cells

• DOI: 10.1002/adma.201305394
• Publication Date: 2014-02-18T19:04:41Z
• Authors: Huisu Jeong; Hui Song; Yusin Pak; Il Keun Kwon; Kyubong Jo; Heon Lee; Gun Young Jung
• Keywords: 02 engineering and technology; 0210 nano-technology; 7. Clean energy

By combining nanoimprint lithography technique and a two-step lift-off process, a Si nanotube array is fabricated and applied as a light absorber for n-Si/PEDOT:PSS hybrid solar cells. The light is effectively trapped within the nanotubes and the device reveals a Jsc of 29.9 mA · cm(-2) and a power conversion efficiency of 10.03%, which is an enhancement of 13.4% compared to the cell having the best-known Si architecture of nanocones as a light absorber to date.