Effects of molecular interface modification in CdS/polymer hybrid bulk heterojunction solar cells

Improved hybrid solar cells consisting of vertical aligned cadmium sulfide (CdS) nanorod arrays and interpenetrating polythiophene (P3HT) have been fabricated via modification on CdS nanorod surface by using aromatic acid as surface ligands. Morphology of CdS/P3HT composite film with interface modif...

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Bibliographic Details
Published in:Solar energy materials and solar cells 2010-12, Vol.94 (12), p.2223-2229
Main Authors: Jiang, Xiaoxia, Chen, Fei, Weiming, Qiu, Yan, Quanxiang, Nan, Yaxiong, Xu, Hao, Yang, Ligong, Chen, Hongzheng
Format: Article
Language:English
Subjects:
Applied sciences
Cadmium sulfides
CdS nanorod
Energy
Equipments, installations and applications
Exact sciences and technology
Hybrid solar cells
Interface modification
Ligands
Nanomaterials
Nanostructure
Natural energy
Photovoltaic cells
Photovoltaic conversion
Photovoltaic performance
Solar cells
Solar cells. Photoelectrochemical cells
Solar energy
Surface chemistry
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Summary:Improved hybrid solar cells consisting of vertical aligned cadmium sulfide (CdS) nanorod arrays and interpenetrating polythiophene (P3HT) have been fabricated via modification on CdS nanorod surface by using aromatic acid as surface ligands. Morphology of CdS/P3HT composite film with interface modification was studied by scanning electron microscopy. The interaction between ligand molecule and CdS nanorod surface was tentatively studied by absorption spectrum, fluorescence spectrum and X-ray photoelectron spectrum. The roles of surface ligands on the improvement of device performance were discussed further from the analysis of photoluminescence spectra, dipole effect and theoretical simulation of photovoltaic characteristics.
ISSN:0927-0248
1879-3398
DOI:10.1016/j.solmat.2010.07.016