Improvement of CdSe/P3HT bulk hetero-junction solar cell performance due to ligand exchange from TOPO to pyridine

Title
Improvement of CdSe/P3HT bulk hetero-junction solar cell performance due to ligand exchange from TOPO to pyridine
Author(s)
박진호트롱윈탐윈[트롱윈탐윈]김우경움메파바[움메파바]지앙동루오[지앙동루오]
Keywords
CDSE THIN-FILMS; POLYMER COMPOSITES; NANOCRYSTALS; DOT; MORPHOLOGY; EMISSION; CDTE; PHOTOCONDUCTIVITY; EFFICIENCY; BATH
Issue Date
201111
Publisher
ELSEVIER SCIENCE BV
Citation
SOLAR ENERGY MATERIALS AND SOLAR CELLS, v.95, no.11, pp.3009 - 3014
Abstract
Cadmium selenide (CdSe) nanoparticles of 2-7 nm diameter were synthesized by a hot injection method and their TOPO ligands exchanged with pyridine by a liquid-liquid extraction process. The effects of the ligand exchange on the material properties of the nanoparticles and device performance of the bulk hetero-junction (BHJ) solar cell were systematically investigated. The wavelength shift to a shorter value observed in the PL spectra of the pyridine-capped CdSe indicates that the size of nanoparticles decreased due to the exchange of the surface ligands of the CdSe from TOPO to pyridine. Improvements in the power conversion efficiency of BHJ solar cells made with pyridine-capped CdSe are mainly attributed to the enhanced current collection, J(sc)=0.43 mA/cm(2) (TOPO) to 1.4 mA/cm(2) (pyridine). (C) 2011 Elsevier B.V. All rights reserved.
URI
http://hdl.handle.net/YU.REPOSITORY/24307http://dx.doi.org/10.1016/j.solmat.2011.06.015
ISSN
0927-0248
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공과대학 > 화학공학부 > Articles
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