Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/57693
Título: | Highly-ordered silicon nanowire arrays for photoelectrochemical hydrogen evolution: an investigation on the effect of wire diameter, length and inter-wire spacing |
Autor(es): | Thalluri, Sitaramanjaneya Mouli Borme, Jerome Xiong, Dehua Xu, Junyuan Li, Wei Amorim, Isilda Alpuim, P. Gaspar, Joao Fonseca, Helder Qiao, Liang Liu, Lifeng |
Data: | 8-Mar-2018 |
Editora: | Royal Society of Chemistry |
Revista: | Sustainable Energy & Fuels |
Citação: | Sustainable Energy Fuels, 2018,2, 978-982. |
Resumo(s): | Vertically-aligned, highly-ordered silicon nanowire (SiNW) array photocathodes are fabricated employing e-beam lithography followed by deep reactive ion etching (DRIE) of Si. The effect of structural parameters of SiNWs, including wire diameter, length and inter-wire spacing, on their photoelectrocatalytic hydrogen evolution performance has been systematically investigated. Within the range of dimensions under study, the SiNW photocathode with a wire diameter of 200 nm, a length of 1 μm and an inter-wire spacing of 175 nm shows the best performance exhibiting a maximal saturated photocurrent density of 52 mA cm−2 and an onset potential (@−1 mA cm−2) of −0.17 V versus reversible hydrogen electrode. These lithography-patterned SiNWs with homogeneous structural parameters can help establish an unobscured structure–activity relation and facilitate Si-based photoelectrode design. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/57693 |
DOI: | 10.1039/C7SE00591A |
ISSN: | 2398-4902 |
Versão da editora: | https://pubs.rsc.org/en/content/articlepdf/2018/se/c7se00591a |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | CDF - CEP - Artigos/Papers (with refereeing) |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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manuscript_V7.pdf | 980,07 kB | Adobe PDF | Ver/Abrir |