1620482-22-5Relevant academic research and scientific papers
A versatile star-shaped organic semiconductor based on benzodithiophene and diketopyrrolopyrrole
He, Qiao,Shahid, Munazza,Panidi, Julianna,Marsh, Adam V.,Huang, Wentao,Daboczi, Matyas,Kim, Ji-Seon,Fei, Zhuping,Anthopoulos, Thomas D.,Heeney, Martin
supporting information, p. 6622 - 6629 (2019/06/14)
We report the synthesis of a new star-shaped π-conjugated oligomer, BDT(DPP)4, containing a benzodithiophene core and four diketopyrrolopyrrole arms. The thermal, electrochemical and optical properties are characterized and the results complemented by computational studies. The utility of the molecule is demonstrated in both solar cell and field-effect transistor devices. In the former, BDT(DPP)4 displays low efficiency when used as an acceptor in blends with poly(3-hexylthiophene) but exhibits promising performance as a donor, in blends with either a fullerene or a non-fullerene acceptor. In field-effect transistors BDT(DPP)4 exhibits typical p-type transistor behavior, which is in accordance with its better donor performance in solar cell devices.
Double donor hole transport material containing phenothiazine structure, preparation method thereof and perovskite solar cell
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Paragraph 0107; 0108; 0110, (2019/03/29)
The invention particularly relates to a double donor hole transport material containing a phenothiazine structure, a preparation method thereof and a perovskite solar cell. The invention discloses a phenothiazine-containing double donor hole transport material, which has the structure represented by formula (I); wherein A is a group containing a conjugated structure, and R is a hydrogen atom, an alkane group, an alkoxy group, an alkyl sulphanyl group, a cycloalkyl group, an aralkyl group or a derivative thereof, an aryloxy group, an alkylseleno group, an alkyltelluro group, a haloalkyl group,a hydroxyl group or a carbonyl group. From the experimental data, a high hole mobility of 10cmVs can be obtained. The preparation method of the phenothiazine-containing double donor hole transport material is simple, no dopant is needed, the cost is low, and separation and purification are facilitated. When the phenothiazine-containing double donor hole transport material is appliedto the perovskite solar cell, a photoelectric conversion efficiency of 16.41% and a high fill factor ff of 0.77 can be obtained, and the charge recombination is weak, so that the material has a broadapplication prospect.
A benzoxazine structure including fen-to the body cavity material and its preparation method and perovskite solar cell (by machine translation)
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Paragraph 0107; 0108; 0110, (2019/02/25)
The invention particularly relates to a double-benzoxazine structure including fen to body cavity material and its preparation method and perovskite solar cell. The invention discloses a benzoxazine structure including fen-hole transporting material to the body, as shown in formula (I) structure; wherein A containing conjugated structure group, R is a hydrogen atom, alkane base, alkoxy, alkylthio, cycloalkyl, aralkyl and its derivatives, aryloxy, [...], [...], halogen alkyl, hydroxyl or carbonyl. By experimental data can be known, it can obtain higher hole mobility of 10- 4 Cm2 V- 1 s- 1 , The benzoxazine structure including fen-to the body cavity transmission material preparation method is simple, without the need to add dopant, low cost, easy to separate and purify, the benzoxazine structure including fen-to the body cavity transmission material and applied to the perovskite in the solar battery, can be 18.23% photoelectric conversion efficiency and the higher the filling factor of the ff is 0.77, charge compound is relatively weak, and has broad application prospect. (by machine translation)
Triisopropylsilylethynyl substituted benzodithiophene copolymers: Synthesis, properties and photovoltaic characterization
Zhu, Enwei,Luo, Guoping,Liu, Yun,Yu, Jiangsheng,Zhang, Fujun,Che, Guangbo,Wu, Hongbin,Tang, Weihua
, p. 1595 - 1603 (2015/04/27)
We demonstrated herein the facile synthesis of triisopropylsilylethynyl (TIPS) functionalized benzo[1,2-b:4,5-b′]dithiophene (BDT). Three new TIPSBDT-based donor-acceptor alternating copolymers were further developed by Pd-catalyzed Stille coupling. The effect of accepting unit structure on the optical, electrochemical and energy levels of the polymer was studied. The positive impact of PFN layer, high-boiling solvents processing, polar solvent treatment and solvent annealing on the performance of polymer:PC71BM bulk heterojunction solar cells was revealed. The best devices delivered a power conversion efficiency of 5.46% when blend films processed using o-dichlorobenzene with 3 vol% DIO and treated with the optimization of THF annealing and insertion of PFN layer. The device performance was correlated with the morphology evolution of blend films processed with solvent choice, methanol treatment and THF annealing.
Direct access to 4,8-functionalized benzo[1,2-b:4,5-b′]dithiophenes with deep low-lying HOMO levels and high mobilities
Zhu, Enwei,Ge, Guidong,Shu, Jingkun,Yi, Mingdong,Bian, Linyi,Hai, Jiefeng,Yu, Jiangsheng,Liu, Yun,Zhou, Jie,Tang, Weihua
supporting information, p. 13580 - 13586 (2014/08/18)
A general methodology has been proposed for the straightforward access to 4,8-functionalized benzo[1,2-b:4,5-b′]dithiophenes (BDTs) via Pd mediated coupling reactions including Suzuki-Sonogashira coupling and carbon-sulfur bond formation reactions. This versatile platform can be used to construct a library of BDT core centred conjugated systems, featuring large fused-ring structure and good charge mobility, where a hole mobility of 0.061 cm2 V -1 s-1 is demonstrated. With the energy level fine-tuned with functionalization, the charge transporting BDTs show great potential for donor-acceptor polymers. This journal is the Partner Organisations 2014.
