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Lead Iodide Microcrystals in Carbon Composite Matrix for Low Power Photodetectors
Author(s) -
Madhusudanan Sreejith P.,
Krishna Orsu Vamsi,
Mohanta Kallol,
Batabyal Sudip K.
Publication year - 2017
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201701813
Subject(s) - materials science , photodetector , composite number , graphite , carbon fibers , iodide , screen printing , optoelectronics , composite material , chemistry , organic chemistry
Lead iodide (PbI 2 ) microcrystals based photodetector were developed by a simple printing method. Carbon composite paste was fabricated by homogeneous mixing of PbI 2 microcrystals, commercial graphite powder, and activated carbon. Composite carbon paste was printed on top of thermally deposited Al electrodes on the glass substrates to fabricate the photodetector. Controlled variation of PbI 2 loading established that 10% PbI 2 in carbon composite is the best candidate for the highest On/Off ratio. The photo generated current was manifested by the defect present in the graphite and the PbI 2 microcrystals interfaces. The effect enables us to develop cost effective printing based photodetector which can work in very low voltage region for low‐power printed electronics.