27192-91-2Relevant articles and documents
9,9′-Bifluorenylidene-Core Perylene Diimide Acceptors for As-Cast Non-Fullerene Organic Solar Cells: The Isomeric Effect on Optoelectronic Properties
Zhao, Yuan,Wang, Huan,Xia, Shengpeng,Zhou, Feng,Luo, Zhenghui,Luo, Jiajia,He, Feng,Yang, Chuluo
, p. 4149 - 4156 (2018)
Two different non-fullerene small-molecule acceptors, m-PIB and p-PIB, based on 9,9′-bifluorenylidene (BF) and perylene diimide (PDI) were designed and synthesized. Four β-substituted PDIs were linked to BF in different positions. Based on DFT analysis, derivative p-PIB exhibited reduced intramolecular twisting between the PDI moieties, more delocalized wave function, and sufficiently wider π-electron delocalization than that of m-PIB. The absorption ability of p-PIB was enhanced due to increased intermolecular interactions. By blending p-PIB with poly{4,8-bis[5-(2ethylhexyl)thiophen-2-yl]benzo[1,2-b:4,5-b′]dithiophene-co-3-fluorothieno[3,4-b]-thiophene-2-carboxylate} (PTB7-Th), organic solar cells (OSCs) based on p-PIB obtained a maximum power conversion efficiency of 5.95 % without any treatments. Due to the improved and balanced hole and electron mobilities, the short-circuit current and fill factor of OSCs based on PTB7-Th and p-PIB were significantly increased. The AFM and TEM results revealed that the PTB7-Th:p-PIB film had favorable nanoscale phase separation and formed a bicontinuous interpenetrating network.
ELECTROACTIVE MATERIALS, PRINTING COMPOSITIONS AND METHODS OF MANUFACTURING SOLAR CELLS
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Page/Page column 41-42, (2017/01/02)
The present disclosure relates to electroactive materials such as hole transport materials (HTMs) for use in solar cells, for example solid state organic/hybrid solar cells such as solid state perovskite solar cells. The present disclosure also relates to
BIFLUORENYLIDENE DERIVATIVES, THEIR PREPARATION AND USES THEREOF
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Page/Page column 12-13, (2010/04/27)
The invention relates to bifluorenylidene derivatives and their corresponding radical anions and radical-cations of the following general formula (II): wherein: Y = C=O and m is an integer ≥0, preferably m = 1, with the proviso that when m = 0, A = borany