TY - JOUR
T1 - Impact of A–D–A-Structured Dithienosilole- and Phenoxazine-Based Small Molecular Material for Bulk Heterojunction and Dopant-Free Perovskite Solar Cells
AU - Narayanaswamy, Kamatham
AU - Yadagiri, Bommaramoni
AU - Chowdhury, Towhid Hossain
AU - Swetha, Thokala
AU - Islam, Ashraful
AU - Gupta, Vinay
AU - Singh, Surya Prakash
N1 - Funding Information:
B.G. thanks UGC for providing senior research fellowship. S.P.S. acknowledges financial support from DST-SERB (EMR/2017/001506). CSIR-IICT Communication No.: Pubs./2019/260.
Publisher Copyright:
© 2019 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2019/12/18
Y1 - 2019/12/18
N2 - Herein, the synthesis of the novel acceptor–donor–acceptor (A–D–A)-structured small molecule Si-PO-2CN based on dithienosilole (DTS) as building block flanked by electron-rich phenoxazine (POZ) units, which are terminated with dicyanovinylene, is presented. Si-PO-2CN showed unique electrochemical and photophysical properties and has been successfully employed in perovskite solar cells (PSCs) as well as in bulk heterojunction organic solar cells (OSCs). The PSCs fabricated with dopant-free Si-PO-2CN as hole-transport material (HTM) exhibited a power conversion efficiency (PCE) of 14.1 % (active area=1.02 cm2). Additionally, a PCE of 5.6 % has been achieved for OSCs, which employed Si-PO-2CN as p-type donor material when blended with a [6,6]-phenyl C71 butyric acid methyl ester (PC71BM) acceptor. The versatile application of Si-PO-2CN provides a pathway for further implementation of DTS-based building blocks in solar cells for designing new molecules.
AB - Herein, the synthesis of the novel acceptor–donor–acceptor (A–D–A)-structured small molecule Si-PO-2CN based on dithienosilole (DTS) as building block flanked by electron-rich phenoxazine (POZ) units, which are terminated with dicyanovinylene, is presented. Si-PO-2CN showed unique electrochemical and photophysical properties and has been successfully employed in perovskite solar cells (PSCs) as well as in bulk heterojunction organic solar cells (OSCs). The PSCs fabricated with dopant-free Si-PO-2CN as hole-transport material (HTM) exhibited a power conversion efficiency (PCE) of 14.1 % (active area=1.02 cm2). Additionally, a PCE of 5.6 % has been achieved for OSCs, which employed Si-PO-2CN as p-type donor material when blended with a [6,6]-phenyl C71 butyric acid methyl ester (PC71BM) acceptor. The versatile application of Si-PO-2CN provides a pathway for further implementation of DTS-based building blocks in solar cells for designing new molecules.
KW - donor–acceptor systems
KW - perovskite phases
KW - photophysical properties
KW - power conversion
KW - solar cells
UR - http://www.scopus.com/inward/record.url?scp=85075538694&partnerID=8YFLogxK
U2 - 10.1002/chem.201903599
DO - 10.1002/chem.201903599
M3 - Article
C2 - 31497906
AN - SCOPUS:85075538694
SN - 0947-6539
VL - 25
SP - 16320
EP - 16327
JO - Chemistry - A European Journal
JF - Chemistry - A European Journal
IS - 71
ER -
