Enhanced light absorption of silicon nanotube arrays for organic/inorganic hybrid solar cells.

Jeong, Huisu; Song, Hui; Pak, Yusin; Kwon, Il Keun; Jo, Kyubong; Lee, Heon; Jung, Gun Young · Adv Mater · 2014

basic_science · Level V

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Abstract

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.