Origin of high photoconductive gain in fully transparent heterojunction nanocrystalline oxide image sensors and interconnects.

Adv Mater

Department of Display and Semiconductor Physics, Korea University, 2511 Sejongro, Sejong, 339-700, Korea; Department of Applied Physics, Korea University, 2511 Sejongro, Sejong, 339-700, Korea.

Published: November 2014

A technique for invisible image capture using a photosensor array based on transparent conducting oxide semiconductor thin-film transistors and transparent interconnection technologies is presented. A transparent conducting layer is employed for the sensor electrodes as well as interconnection in the array, providing about 80% transmittance at visible-light wavelengths. The phototransistor is a Hf-In-Zn-O/In-Zn-O heterostructure yielding a high quantum-efficiency in the visible range.

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http://dx.doi.org/10.1002/adma.201401955DOI Listing

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