Benzotriazole and benzodithiophene containing medium band gap polymer for bulk heterojunction polymer solar cell applications
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Tarih
2014
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
John Wiley and Sons Inc.
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
An alternating donor?acceptor copolymer based on a benzotriazole and benzodithiophene was synthesized and selenophene was incorporated as ??bridge. The photovoltaic and optical properties of polymer were studied. The copolymer showed medium band gap and dual absorption peaks in UV?Vis absorption spectra. Photovoltaic properties of P?SBTBDT were performed by conventional device structure. The OSC device based on polymer: PC71BM (1:1, w/w) exhibited the best PCE of 3.60% with a Voc of 0.67 V, a Jsc of 8.95 mA/cm2, and a FF of 60%. This finding was supported with morphological data and space charge limited current (SCLC) mobilities. The hole mobility of the copolymer was estimated through SCLC model. Although surface roughness of the active layer is really high, mobility of a polymer was found as 7.46 × 10?3 cm2/Vs for optimized device that can be attributed to Se?Se interactions due to the larger, more?polarizable Se atom.
Açıklama
Anahtar Kelimeler
Benzodithiophene, Conjugated Polymers, Copolymerization, Organic Solar Cell, Synthesis
Kaynak
Journal of Polymer Science, Part A: Polymer Chemistry
WoS Q Değeri
N/A
Scopus Q Değeri
N/A
Cilt
53
Sayı
4
Künye
Ünay, H., Akbaşoğlu Ünlü, N., Hizalan, G., Hacıoğlu, S. O., Yıldız, D. E., Toppare, L. K., Çırpan, A. (2015). Benzotriazole and benzodithiophene containing medium band gap polymer for bulk heterojunction polymer solar cell applications. Journal of Polymer Science Part A: Polymer Chemistry, 53(4), 528-535.
