CdSe Quantum Dot-sensitized, Nanoporous p-type NiO Photocathodes for Quantum Dot-sensitized Solar Cells

Title
CdSe Quantum Dot-sensitized, Nanoporous p-type NiO Photocathodes for Quantum Dot-sensitized Solar Cells
Author(s)
안광순박민아이수용김재홍강순형[강순형]김현수[김현수]최철종[최철종]
Keywords
DYE; NANOTUBES
Issue Date
201407
Publisher
TAYLOR & FRANCIS LTD
Citation
MOLECULAR CRYSTALS AND LIQUID CRYSTALS, v.598, no.1, pp.154 - 162
Abstract
CdSe quantum dots (QDs) were deposited on a p-type nanoporous NiO surface by repeating the successive ionic layer adsorption and reaction (SILAR) procedure 6, 9, 12, and 15times. The NiO/CdSe prepared using 12 SILAR cycles, which is denoted as the NiO/CdSe(12), exhibited a larger QD size and better QD coverage on the nanoporous NiO than the NiO films with CdSe(6) and CdSe(9), leading to better light absorption over longer wavelengths and a significantly increased hole lifetime. The resulting quantum dot-sensitized solar cell (QD-SSC) exhibited significantly enhanced cell efficiency (0.35%) compared to that (0.013%) of the QD-SSC with the NiO/CdSe(6). NiO/CdSe(15), however, exhibited a lower hole lifetime and hindered ion transport as a result of the agglomeration of QDs as well as the severely blocked pores of the nanoporous NiO, causing a significantly reduced cell efficiency for QD-SSCs with NiO/CdSe(15).
URI
http://hdl.handle.net/YU.REPOSITORY/31580http://dx.doi.org/10.1080/15421406.2014.933387
ISSN
1542-1406
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공과대학 > 화학공학부 > Articles
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