NDLI: Efficient bulk heterojunction solar cells incorporating carbon nanotubes and with electron selective interlayers

Content Provider	IEEE Xplore Digital Library
Author	Kalita, G. Wakita, K. Umeno, M.
Copyright Year	2010
Description	Author affiliation: Chubu University, Department of Electronics and Information Engineering, 1200 Matsumoto cho, Kasugai-shi, Aichi 487-8501, Japan (Kalita, G.; Wakita, K.; Umeno, M.)
Abstract	Here, we demonstrate incorporation of carbon nanotubes (CNTs) in the active layer of donor-acceptor based solar cells and thereby significantly enhanced device performance. In this work, bulk heterojunction solar cells were fabricated with P3HT and PCBM incorporating chemically modified CNTs. Enhanced device performance was achieved for P3HT:PCBM solar cells incorporating a certain amount of modified CNTs in the active layer. P3HT:PCBM bulk heterojunction solar cells were fabricated with a thin interlayer of TiO between the active layer and top electrode as a electron selective layer. The TiO layer also acts as a barrier for shorting and shunting in the device, caused by the presence of metallic CNTs. In the fabricated device, CNTs provide efficient charge transportation path and the TiO layer acts as an electron selective layer. The enhanced device performance with introduction of CNTs is attributed to better charge transportation. Work function of MWNTs is in the range of 4.5∼5.1 eV, which is close to valance band of polymer; it signifies possible hole transportation through MWNTs in the active layer. As well as, we have studied affect of MoO and C as a hole and electron selective interlayer respectively for P3HT:PCBM bulk heterojunction solar cells. Fabricated device with MoO layer compare to PEDOT:PSS device shows better fill factor and small improve in open circuit voltage thought the short circuit current density was less. The initial degradation of P3HT:PCBM solar cells with MoO and C interlayer at the respective electrode is reduced that of the device with PEDOT:PSS interlayer.
Starting Page	000090
Ending Page	000094
File Size	2624964
Page Count	5
File Format	PDF
ISBN	9781424458905
ISSN	01608371
e-ISBN	9781424458929
DOI	10.1109/PVSC.2010.5614489
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-06-20
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Photovoltaic cells Indium tin oxide Performance evaluation Heterojunctions Polymers Charge carrier processes Films
Content Type	Text
Resource Type	Article
Subject	Industrial and Manufacturing Engineering Control and Systems Engineering Electrical and Electronic Engineering

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