Year: 2008
Type: article
Abstract: There are currently great needs to develop low-cost inorganic materials that can efficiently perform solar water splitting as photoelectrolysis of water into hydrogen and oxygen has significant potential to provide clean energy. We investigate the Si/TiO(2) nanowire heterostructures to determine their potential for the photooxidation of water. We observed that highly dense Si/TiO(2) core/shell nanowire arrays enhanced the photocurrent by 2.5 times compared to planar Si/TiO(2) structure due to their low reflectance and high surface area. We also showed that n-Si/n-TiO(2) nanowire arrays exhibited a larger photocurrent and open circuit voltage than p-Si/n-TiO(2) nanowires due to a barrier at the heterojunction.
Source: Nano Letters
DOI: 10.1021/nl8032763
Authors: Yun Jeong Hwang, Akram Boukai, Peidong Yang
Language: English
Field: Energy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2020014415