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Strong quantum confinement effects in kesterite Cu2ZnSnS4 nanospheres for organic optoelectronic cells

Title
Strong quantum confinement effects in kesterite Cu2ZnSnS4 nanospheres for organic optoelectronic cells
Author
김태환
Keywords
SOLAR-CELL; NANOCRYSTALS; PHOTOVOLTAICS; NANOPARTICLES; DOTS; SIZE
Issue Date
2013-12
Publisher
Royal Society of Chemistry
Citation
NANOSCALE, v. 5, NO 23, Page. 11940-11943
Abstract
X-ray photoelectron spectra, X-ray diffraction patterns, scanning electron microscopy images, and high-resolution transmission electron microscopy images showed that the as-prepared samples were Cu2ZnSnS4 (CZTS) nanospheres with a kesterite phase. Ultraviolet-visible absorption spectra for the CZTS nanospheres with an average crystallite size of 3.26 nm showed that the absorption edge corresponding to the energy gap shifted to the higher energy side due to the quantum confinement within the CZTS nanoparticles. Current-density measurements showed that the power conversion efficiency (0.952%) of the organic photovoltaic cells with CZTS nanospheres was much higher than that (0.120%) of the cells without CZTS nanospheres.
URI
http://hdl.handle.net/20.500.11754/45685
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ELECTRONIC ENGINEERING(융합전자공학부) > Articles
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