期刊
APPLIED PHYSICS LETTERS
卷 99, 期 10, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3636438
关键词
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资金
- King Abdullah University of Science and Technology (KAUST) [KUS-11-009-21]
- Ontario Research Fund Research Excellent Program
- Natural Sciences and Engineering Research Council (NSERC) of Canada, Angstrom Engineering and Innovative Technology
We fabricate and investigate field-effect transistors in which a light-absorbing photogate modulates the flow of current along the channel. The photogate consists of colloidal quantum dots that efficiently transfer photoelectrons to the channel across a charge-separating (type-II) heterointerface, producing a primary and sustained secondary flow that is terminated via electron back-recombination across the interface. We explore colloidal quantum dot sizes corresponding to bandgaps ranging from 730 to 1475 nm and also investigate various stoichiometries of aluminum-doped ZnO (AZO) channel materials. We investigate the role of trap state energies in both the colloidal quantum dot energy film and the AZO channel. (C) 2011 American Institute of Physics. [doi:10.1063/1.3636438]
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