Cited 21 time in webofscience Cited 23 time in scopus

A skin-like two-dimensionally pixelized full-color quantum dot photodetector

Title
A skin-like two-dimensionally pixelized full-color quantum dot photodetector
Authors
Kim, JaehyunKwon, Sung-MinKang, Yeo KyungKim, Yong-HoonLee, Myung-JaeHan, KwangjoonFacchetti, AntonioKim, Myung-GilPark, Sung Kyu
DGIST Authors
Kim, Jaehyun; Kwon, Sung-Min; Kang, Yeo Kyung; Kim, Yong-Hoon; Lee, Myung-Jae; Han, Kwangjoon; Facchetti, Antonio; Kim, Myung-Gil; Park, Sung Kyu
Issue Date
2019-11
Citation
Science Advances, 5(11)
Type
Article
Article Type
Article
Keywords
PHOTOTRANSISTORSANTIREFLECTIONPHOTODIODESFILM
ISSN
2375-2548
Abstract
Direct full-color photodetectors without sophisticated color filters and interferometric optics have attracted considerable attention for widespread applications. However, difficulties of combining various multispectral semiconductors and improving photon transfer efficiency for high-performance optoelectronic devices have impeded the translation of these platforms into practical realization. Here, we report a low-temperature (<150 degrees C) fabricated two-dimensionally pixelized full-color photodetector by using monolithic integration of various-sized colloidal quantum dots (QDs) and amorphous indium-gallium-zinc-oxide semiconductors. By introducing trap-reduced chelating chalcometallate ligands, highly efficient charge carrier transport and photoresistor-free fine-patterning of QD layers were successfully realized, exhibiting extremely high photodetectivity (>4.2 x 10(17) Jones) and photo-responsivity (>8.3 x 10(3) A W-1) in a broad range of wavelengths (365 to 13(10) nm). On the basis of these technologies, a wavelength discriminable phototransistor circuit array (>600 phototransistors) was implemented on a skin-like soft platform, which is expected to be a versatile and scalable approach for wide spectral image sensors and human-oriented biological devices.
URI
http://hdl.handle.net/20.500.11750/11020
DOI
10.1126/sciadv.aax8801
Publisher
American Association for the Advancement of Science
Related Researcher
Files:
Collection:
Division of Nanotechnology1. Journal Articles


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