164352-24-3Relevant academic research and scientific papers
Polymer Solar Cells Based on the Copolymers of Naphtho[1,2-c:5,6-c]bis(1,2,5-thiadiazole) and Alkoxylphenyl Substituted Benzodithiophene with High Open-Circuit Voltages
Liu, Liqian,Zhang, Guichuan,He, Baitian,Huang, Fei
, p. 902 - 908 (2015)
Two novel naphtho[1,2-c:5,6-c]bis(1,2,5-thiadiazole) and alkoxylphenyl substituted benzodithiophene based copolymers were developed as the donor materials for polymer solar cells. The resulting copolymers exhibit broad absorption bands in the range of 500
Synthesis and characterization of alkoxyphenylthiophene substituted benzodithiophene-based 2D conjugated polymers for organic electronics applications
Kranthiraja, Kakaraparthi,Gunasekar, Kumarasamy,Chakravarthi, Nallan,Song, Myungkwan,Moon, Jong Hun,Lee, Jin Yong,Kang, In-Nam,Jin, Sung-Ho
, p. 100 - 111 (2015)
In order to establish the correlation between intramolecular non-covalent interactions in the polymer backbone and the position/nature of alkoxy side chains in electron rich unit, two new series of low band gap polymers (P1-P4; P5-P8) were synthesized. We
Implication of side-chain fluorination on electronic properties, ordering structures, and photovoltaic performance in asymmetric-indenothiophene-based semiconducting polymers
Jiang, Chenglin,Chen, Xiaofeng,Zhao, Mingzhi,Li, Yongfang,Li, Xiaoyu,Wang, Haiqiao
, p. 122 - 130 (2019)
Side-chain fluorination of conjugated polymers has been proved to be a highly effective approach for optimizing optical and electrical properties of the relative polymers. However, current studies on the fluorination are all based on symmetric molecular structures. In this work, two new D-A type photovoltaic polymers, namely PITPh-DTffBT and PITPhf-DTffBT, based on asymmetric indenothiophene (IT) donor units with alkoxyphenyl or fluoroalkoxyphenyl substituents were designed and synthesized. Effects of the fluorine substitution in the asymmetric IT donor units on the electronic structure, ordering structure, photovoltaic properties, and charge generation and recombination dynamics were investigated. It is found that side-chain fluorination in the asymmetric donor units of the D-A polymers endowed the relative polymer with a deeper HOMO level, higher and more balanced charge mobilites, increased charge dissociation efficiency and reduced bimolecular recombination. As a result, the bulk heterojunction solar cell based on the blend film of PITPhf-DTffBT and PC71BM demonstrated an efficiency of 7.03%, whereas the cell efficiency based on PITPh-DTffBT was only 5.68%. These results indicate that our design strategy by introducing a fluoroalkoxyphenyl unit as side chain to fabricate asymmetric IT-based polymer is efficient in improving the photovoltaic performance. We believe that the results provide new insights into the design of high-performance semiconducting photovoltaic polymers.
Overcoming the trade-off between Voc and Jsc: Asymmetric chloro-substituted two-dimensional benzo[1,2-b:4,5-b′]dithiophene-based polymer solar cells
Chao, Pengjie,Liu, Longzhu,Qu, Jianfei,He, Qiming,Gan, Shenglong,Meng, Hong,Chen, Wei,He, Feng
, p. 746 - 754 (2019)
To achieve the high PCE and simultaneously overcome the trade-off between open circuit voltage (VOC) and short-circuit current density (JSC), the reasonable design of the donor material is still a great challenge in non-fullerene polymer solar cells (PSCs). Herein, a pair of asymmetric 2D BDT-based wide band gap polymers, named PBPTBz-1Cl and PBPTBz-2Cl, respectively, were designed and synthesized through simultaneously introducing a chloro-substituted thiophene and another alkoxylphenyl groups as side chains onto the same BDT unit. As expected, the polymers PBPTBz-1Cl and PBPTBz-2Cl exhibit the deeper HOMO levels of ?5.32 and ?5.41 eV, respectively, compared with the HOMO value of ?5.27 eV for chlorine-free substituted polymer PBPTBz-0Cl. Therefore, the PBPTBz-2Cl:IT-M based PSCs exhibited a higher Voc of 0.99 V, with an enhanced Jsc of 14.92 mA cm?2 and PCE of 7.18%. The Voc, Jsc and PCE were simultaneously enhanced from PBPTBz-0Cl:IT-M to PBPTBz-1Cl:IT-M, then to PBPTBz-2Cl:IT-M based PSCs successively. These results demonstrate that the challenge of the trade-off between Voc and Jsc could be overcome through the asymmetric strategy of the chloro-substituted thiophene and alkylphenyl groups as different side chains onto the same BDT unit. Hence, considering the low cost of starting materials and convenient introduction of chlorine atoms, the asymmetric chlorination of the side chain of BDT unit would be the great potential for achieving the high-performance PSCs.
Tailor-made hole-conducting coadsorbents for highly efficient organic dye-sensitized solar cells
Choi, In Taek,Ju, Myung Jong,Song, Sang Hyun,Kim, Sang Gyun,Cho, Dae Won,Im, Chan,Kim, Hwan Kyu
, p. 15545 - 15555 (2013)
The Y-shaped, low molecular mass, hole-conductor (HC), acidic coadsorbents 4-{3,7-bis[4-(2-ethylhexyloxy)phenyl]-10H-phenothiazin-10-yl}benzoic acid (PTZ1) and 4-{3,7-bis[4-(2-ethylhexyloxy)phenyl]-10H-phenothiazin-10-yl}biphenyl-4- carboxylic acid (PTZ2)
Distinct phosphorescence enhancement of red-emitting iridium(III) complexes with formyl-functionalized phenylpyridine ligands
Cao, Sizhen,Hao, Lin,Lai, Wen-Yong,Zhang, Hao,Yu, Zhou,Zhang, Xinwen,Liu, Xu,Huang, Wei
, p. 4709 - 4718 (2016)
A new highly efficient red-emitting Ir(iii) complex, bis [9-(4-(2-ethylhexyloxy)phenyl)-3-(4-phenylquinolin-2-yl)-9H-carbazole] [3-(pyridin-2-yl) benzaldehyde]iridium(iii) (Ir-CHO), has been synthesized and characterized to investigate the impact of the e
Synthesis and Application of Perylene-Embedded Benzoazoles for Small-Molecule Organic Solar Cells
Chen, Zhicai,Li, Jing,Li, Mingguang,Chen, Cailin,Xu, Shen,Tang, Xingxing,Chen, Lingfeng,Chen, Runfeng,Huang, Wei
, p. 6376 - 6379 (2018)
Two new building blocks of perylene-embedded benzoazoles containing both rigid 2D-conjugated aromatic rings and flexible branched alkyl chains were designed and facilely synthesized in high yields for organic solar cells (OSCs). With a typical acceptor of
Synthesis and characterization of hole transporting materials containing bis(carbazole) groups for solid-state dye-sensitized solar cells
Jung, Suran,Kwon, Younghwan
, (2021/10/21)
In this study, bis(carbazole) derivatives, such as bis[N-(2-ethylhexyl)-carbazole-3-yl] (HTM_I) and bis[N-(2-ethylhexyloxylphenyl)-carbazole-3-yl] (HTM_II), were successfully synthesized for use as small-molecule organic hole-transporting materials (HTMs)
Effect of π-spacers and anchoring groups on the photovoltaic performances of ullazine-based dyes
Qiao, He,Deng, Yanghua,Peng, Ruipeng,Wang, Guo,Yuan, Jing,Tan, Songting
, p. 70046 - 70055 (2016/08/06)
Three ullazine-based organic sensitizers (QD1, QD2 and QD3) have been designed, synthesized, and characterized for dye-sensitized solar cells (DSSCs). Ullazine possesses some attractive properties, such as a planar π-system to promote intensely the intram
Blue-Greenish Electroluminescent Poly(p-phenylenevinylene) Developed for Organic Light-Emitting Diode Applications
Vilbrandt, Nicole,Gassmann, Andrea,Von Seggern, Heinz,Rehahn, Matthias
, p. 1674 - 1680 (2016/03/19)
A novel electroluminescent poly(p-phenylenevinylene) (PPV) derivative was synthesized via the Gilch route, which emits in the blue-greenish region. The required monomer synthesis is a multistep process starting from catechol and does not involve any criti
