Synthesis and photophysical characterization of isoindigo building blocks as molecular acceptors for organic photovoltaics
Küçük Resim Yok
Tarih
2018
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Pergamon-Elsevier Science Ltd
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Five isoindigo-based donor-acceptor-donor (D-A-D) type small molecules have been synthesized in order to investigate their intramolecular charge transfer characteristics. UV-vis absorption of these dyes exhibits a wide absorption band ranging from 300 to 650 nm with two distinct bands, giving the narrow bandgaps between 1.72 and 1.85 eV. Taking into account their HOMO-LUMO energy levels and bandgaps, isoindigo dyes have been used in the active layer of organic solar cell (OSC) devices. When these small molecule semiconductors were used as acceptors with the donor poly(3-hexylthiophene-2,5-diyl (P3HT) polymer in the inverted OSC devices, the highest power conversion efficiency (PCE) was obtained as 0.10% for pyrene-substituted isoindigo derivative. (C) 2018 Elsevier B.V. All rights reserved.
Açıklama
Anahtar Kelimeler
Isoindigo, Pyrene, Intramolecular charge transfer, Acceptor, Inverted organic solar cell
Kaynak
Spectrochimica Acta Part A-Molecular and Biomolecular Spectroscopy
WoS Q Değeri
Q1
Scopus Q Değeri
Q2
Cilt
202
