Optical properties and bridge photodetector integration of lead sulfide nanowires

Title
Optical properties and bridge photodetector integration of lead sulfide nanowires
Authors
김상혁박재관최원준임주희Jungdong KimEunsoon OhRui XiaoSean RitterYiming YangDong Yu
Issue Date
2017-11
Publisher
Nanotechnology
Citation
VOL 28, NO 47-475706-7
Abstract
We studied optical properties and photocurrent characteristics of PbS nanowires grown by chemical vapor deposition. Distinct bandedge photoluminescence (PL) emission was observed in the mid-infrared spectral range and the quantum confinement effect estimated from the PL peak energy was within 40 meV, consistent with the average diameter of the nanowire (~70 nm) being significantly larger than the exciton Bohr radius (~18 nm). We also demonstrated interdigit photo detectors making use of these PbS nanowires suspended between two pre-patterned Ti electrodes, where Ti also acted as metal catalyst for the nanowire growth. The threshold wavelength of the photocurrent was found to be ~3 μm at room temperature.
URI
http://pubs.kist.re.kr/handle/201004/66673
ISSN
0957-4484
Appears in Collections:
KIST Publication > Article
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