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Open Access Nano Express

In situ synthesis of P3HT-capped CdSe superstructures and their application in solar cells

Yanling Peng1, Guosheng Song1, Xianghua Hu1, Guanjie He1, Zhigang Chen1*, Xiaofeng Xu2* and Junqing Hu1*

Author affiliations

1 State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, China

2 Department of Applied Physics, Donghua University, Shanghai, 201620, China

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Citation and License

Nanoscale Research Letters 2013, 8:106  doi:10.1186/1556-276X-8-106

Published: 26 February 2013

Abstract

Organic/inorganic hybrid solar cells have great potentials to revolutionize solar cells, but their use has been limited by inefficient electron/hole transfer due to the presence of long aliphatic ligands and unsatisfying continuous interpenetrating networks. To solve this problem, herein, we have developed a one-pot route for in situ synthesis of poly(3-hexylthiophene) (P3HT)-capped CdSe superstructures, in which P3HT acts directly as the ligands. These CdSe superstructures are in fact constructed from numerous CdSe nanoparticles. The presence of P3HT ligands has no obvious adverse effects on the morphologies and phases of CdSe superstructures. Importantly, higher content of P3HT ligands results in stronger photoabsorption and fluorescent intensity of CdSe superstructure samples. Subsequently, P3HT-capped CdSe superstructures prepared with 50 mg P3HT were used as a model material to fabricate the solar cell with a structure of PEDOT:PSS/P3HT-capped CdSe superstructures: P3HT/Al. This cell gives a power conversion efficiency of 1.32%.

Keywords:
P3HT-capped CdSe superstructures; Photoabsorption; Continuous interpenetrating networks; Solar cell