Liu L, Li GH, Wang Y, Wang YY, Li T, Zhang T, Qin SJ. A photovoltaic self-powered gas sensor based on a single-walled carbon nanotube/Si heterojunction.
NANOSCALE 2017;
9:18579-18583. [PMID:
28849854 DOI:
10.1039/c7nr02590d]
[Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We present a novel photovoltaic self-powered gas sensor based on a p-type single-walled carbon nanotube (SWNT) and n-type silicon (n-Si) heterojunction. The energy from visible light suffices to drive the device owing to a built-in electric field (BEF) induced by the differences between the Fermi levels of SWNTs and n-Si.
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