Monolayer Quantum-Dot Based Light-Sensor by a Photo-electrochemical Mechanism

Title
Monolayer Quantum-Dot Based Light-Sensor by a Photo-electrochemical Mechanism
Authors
유성종Sitansu Sekhar Nanda김민직Georgia C. Papaefthymiou이동기
Issue Date
2020-09
Publisher
Micromachines
Citation
VOL 11, NO 9, 817
Abstract
Monolayer nanocrystal-based light sensors with cadmium-selenium thin film electrodes have been investigated using electrochemical cyclic voltammetry tests. An indium tin oxide electrode system, with a monolayer of homogeneously deposited cadmium-selenium quantum dots was proven to work as a photo-sensor via an electrochemical cell mechanism; it was possible to tune current densities under light illumination. Electrochemical tests on a quantum dot capacitor, using different sized (red, yellow and green) cadmium-selenium quantum dots on indium tin oxide substrates, showed typical capacitive behavior of cyclic voltammetry curves in 2M H2SO4 aqueous solutions. This arrangement provides a beneficial effect in, both, charge separation and light sensory characteristics. Importantly, the photocurrent density depended on quantum yield rendering tunable photo-sensing properties.
URI
http://pubs.kist.re.kr/handle/201004/72067
ISSN
2072-666X
Appears in Collections:
KIST Publication > Article
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE