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Effect of Palladium‐Tetrakis(Triphenylphosphine) Catalyst Traces on Charge Recombination and Extraction in Non‐Fullerene‐based Organic Solar Cells
Advanced Functional Materials ( IF 18.5 ) Pub Date : 2021-02-08 , DOI: 10.1002/adfm.202009363
Nora Schopp 1 , Viktor V. Brus 2 , Jaewon Lee 3 , Alana Dixon 1 , Akchheta Karki 1 , Tuo Liu 4 , Zhengxing Peng 5 , Kenneth R. Graham 4 , Harald Ade 5 , Guillermo C. Bazan 1 , Thuc‐Quyen Nguyen 1
Advanced Functional Materials ( IF 18.5 ) Pub Date : 2021-02-08 , DOI: 10.1002/adfm.202009363
Nora Schopp 1 , Viktor V. Brus 2 , Jaewon Lee 3 , Alana Dixon 1 , Akchheta Karki 1 , Tuo Liu 4 , Zhengxing Peng 5 , Kenneth R. Graham 4 , Harald Ade 5 , Guillermo C. Bazan 1 , Thuc‐Quyen Nguyen 1
Affiliation
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The effect of the cross‐coupling catalyst tetrakis(triphenylphosphine)palladium(0) (Pd(PPh3)4) on the performance of a model organic bulk‐heterojunction solar cell composed of a blend of poly([2,6′‐4,8‐di(5‐ethylhexylthienyl)benzo[1,2‐b;3,3‐b]dithiophene]{3‐fluoro‐2[(2‐ethylhexyl)carbonyl]thieno[3,4‐b]thiophenediyl}) (PTB7‐Th) donor and 3,9‐bis(2‐methylene‐((3‐(1,1‐dicyanomethylene)‐6,7‐difluoro)‐indanone))‐5,5,11,11‐tetrakis(4‐hexylphenyl)‐dithieno[2,3‐d:2′,3′‐d′]‐s‐indaceno[1,2‐b:5,6‐b′]dithiophene (IOTIC‐4F) non‐fullerene acceptor is investigated. The effect of intentional addition of different amounts of Pd(PPh3)4 on morphology, free charge carrier generation, non‐geminate bulk trap‐ and surface trap‐assisted recombination as well as bimolecular recombination and charge extraction is quantified. This work shows that free charge carrier generation is affected significantly, while the impact of Pd(PPh3)4 on non‐geminate recombination processes is limited because the catalyst does not facilitate efficient trap‐assisted recombination. The studied system shows substantial robustness towards the addition of Pd(PPh3)4 in small amounts.
中文翻译:
钯-四(三苯基膦)催化剂痕迹对基于非富勒烯的有机太阳能电池中电荷复合和萃取的影响
交叉偶联催化剂四(三苯基膦)钯(0)(Pd(PPh 3)4)对由聚([2,6'-4]混合物组成的模型有机体异质结太阳能电池的性能的影响,8-二(5-乙基己基噻吩基)苯并[1,2-b; 3,3-b]二噻吩] {3-氟-2 [(2-乙基己基)羰基]噻吩并[3,4-b]噻吩二基}) (PTB7-Th)供体和3,9-双(2-亚甲基-((3-(1,1-二氰基亚甲基)-6,7-二氟)-茚满酮))-5,5,11,11-四( 4-己基苯基)-二硫代[2,3-d:2',3'-d']-s-茚基[1,2-b:5,6-b']二噻吩(IOTIC-4F)非富勒烯受体被调查。有意添加不同数量的Pd(PPh 3)4的效果在形态学上,定量了自由电荷载流子的产生,非双电荷的本体陷阱和表面陷阱辅助的重组以及双分子重组和电荷提取。这项工作表明,自由电荷载流子的产生会受到显着影响,而Pd(PPh 3)4对非双键重组过程的影响是有限的,因为催化剂不能促进有效的陷阱辅助重组。所研究的系统显示出对少量添加Pd(PPh 3)4的坚固性。
更新日期:2021-04-08
中文翻译:
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钯-四(三苯基膦)催化剂痕迹对基于非富勒烯的有机太阳能电池中电荷复合和萃取的影响
交叉偶联催化剂四(三苯基膦)钯(0)(Pd(PPh 3)4)对由聚([2,6'-4]混合物组成的模型有机体异质结太阳能电池的性能的影响,8-二(5-乙基己基噻吩基)苯并[1,2-b; 3,3-b]二噻吩] {3-氟-2 [(2-乙基己基)羰基]噻吩并[3,4-b]噻吩二基}) (PTB7-Th)供体和3,9-双(2-亚甲基-((3-(1,1-二氰基亚甲基)-6,7-二氟)-茚满酮))-5,5,11,11-四( 4-己基苯基)-二硫代[2,3-d:2',3'-d']-s-茚基[1,2-b:5,6-b']二噻吩(IOTIC-4F)非富勒烯受体被调查。有意添加不同数量的Pd(PPh 3)4的效果在形态学上,定量了自由电荷载流子的产生,非双电荷的本体陷阱和表面陷阱辅助的重组以及双分子重组和电荷提取。这项工作表明,自由电荷载流子的产生会受到显着影响,而Pd(PPh 3)4对非双键重组过程的影响是有限的,因为催化剂不能促进有效的陷阱辅助重组。所研究的系统显示出对少量添加Pd(PPh 3)4的坚固性。