Annealing Effect on Photovoltaic Performance of Hybrid P3HT/In-Situ Grown CdS Nanocrystal Solar Cells | Zendy

Hung-Chou Liao | Zendy; N. Chantarat | Zendy; SanYuan Chen | Zendy; Cheng-Hsiung Peng | Zendy

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Annealing Effect on Photovoltaic Performance of Hybrid P3HT/In-Situ Grown CdS Nanocrystal Solar Cells

Author(s) -

Hung-Chou Liao,

N. Chantarat,

SanYuan Chen,

Cheng-Hsiung Peng

Publication year - 2011

Publication title -

journal of the electrochemical society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.258

H-Index - 271

eISSN - 1945-7111

pISSN - 0013-4651

DOI - 10.1149/1.3585668

Subject(s) - nanocrystal , annealing (glass) , materials science , chemical engineering , polymer , photovoltaic system , percolation threshold , conjugated system , hybrid solar cell , composite number , nanotechnology , energy conversion efficiency , optoelectronics , polymer solar cell , electrical resistivity and conductivity , composite material , ecology , electrical engineering , engineering , biology

The CdS nanocrystals with different aspect ratios (ARs) can be synthesized directly in the presence of conjugated polymer poly(3-hexylthiophene-2,5-diyl) (P3HT). The UV-vis spectra of the composite films show a blue shift of the p-p * transition band with an increasing aspect ratio (AR) of the CdS nanocrystals, which was attributed to the destruction of the ordered structure of polymer chains as supported by PL measurements. Atomic force microscope measurements on P3HT/CdS film also demonstrate the aggre-gation of CdS nanocrystal in the P3HT matrix is more apparent for the CdS nanocrystals of AR 4 than that of AR 16, indicat-ing a stronger interaction between P3HT and CdS for a larger AR (16), which is favorable for the network structure and formation of percolation paths to increase the transport properties of the P3HT/CdS solar cells. Therefore, a higher power conversion effi-ciencies (PCE) up to 2.95 % can be obtained for the in-situ-grown P3HT/CdS with AR 16 upon annealing treatment at 160C for 60 min. VC 2011 The Electrochemical Society. [DOI: 10.1149/1.3585668] All rights reserved

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