Tuning nanoscale morphology using mixed solvents and solvent vapor treatment for high performance polymer solar cells

RSC Advances ◽  
2014 ◽  
Vol 4 (89) ◽  
pp. 48724-48733 ◽  
Author(s):  
Dun Wang ◽  
Fujun Zhang ◽  
Lingliang Li ◽  
Jiangsheng Yu ◽  
Jian Wang ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Performance ◽  
Polymer Solar Cells ◽  
Mixed Solvents ◽  
Acid Methyl Ester ◽  
Solvent Vapor ◽  
Acid Methyl ◽  
High Performance Polymer ◽  
Butyric Acid Methyl Ester ◽  
Vapor Treatment

A series of high performance polymer solar cells (PSCs) were fabricated with poly[(4,8-bis-(2-ethylhexyloxy)-benzo[1,2-b:4,5-b′](dithiophene)-2,6-diyl-alt-(4-(2-ethylhexanoyl)-thieno [3,4-b]thiophene)-2,6-diyl] (PBDTTT-EFT) as the donor and with [6,6]phenyl-C71-butyric acid methyl ester (PC71BM) as the acceptor.

scholarly journals Employing PCBTDPP as an Efficient Donor Polymer for High Performance Ternary Polymer Solar Cells

Polymers ◽  
2019 ◽  
Vol 11 (9) ◽  
pp. 1423 ◽  
Author(s):  
Xu ◽  
Saianand ◽  
Roy ◽  
Qiao ◽  
Reza ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Performance ◽  
Bulk Heterojunction ◽  
Polymer Solar Cells ◽  
Power Conversion ◽  
Acid Methyl Ester ◽  
Acid Methyl ◽  
Donor Acceptor ◽  
Butyric Acid Methyl Ester ◽  
Ternary Polymer

A compatible low-bandgap donor polymer (poly[N-90-heptadecanyl-2,7carbazole-alt-3,6-bis(thiophen-5-yl)-2,5-dioctyl-2,5-dihydropyrrolo [3,4] pyrrole-1,4-dione], PCBTDPP) was judicially introduced into the archetypal poly(3-hexylthiophene):[6,6]-phenyl-C61-butyric acid methyl ester (P3HT:PC61BM) photoactive system to fabricate highly efficient ternary based bulk heterojunction polymer solar cells (PSCs). The PCBTDPP ternary-based PSC with optimal loading (0.2 wt.%) displayed outstanding performance with a champion power conversion efficiency (PCE) of 5.28% as compared to the PCE (4.67%) for P3HT:PC61BM-based PSC (reference). The improved PCE for PCBTDPP ternary-based PSC can be mainly attributed to the incorporation of PCBTDPP into P3HT:PC61BM that beneficially improved the optical, morphological, electronic, and photovoltaic (PV) performance. This work instills a rational strategy for identifying components (donor/acceptor (D/A) molecules) with complementary beneficial properties toward fabricating efficient ternary PSCs.

scholarly journals Tandem polymer solar cells: simulation and optimization through a multiscale scheme

2017 ◽  
Vol 8 ◽  
pp. 123-133 ◽  
Author(s):  
Fanan Wei ◽  
Ligang Yao ◽  
Fei Lan ◽  
Guangyong Li ◽  
Lianqing Liu
Keyword(s):  
Solar Cells ◽  
Methyl Ester ◽  
Polymer Solar Cells ◽  
Power Conversion ◽  
Acid Methyl Ester ◽  
Multiscale Simulation ◽  
Acid Methyl ◽  
Donor Acceptor ◽  
Butyric Acid Methyl Ester ◽  
Simulation Scheme

In this paper, polymer solar cells with a tandem structure were investigated and optimized using a multiscale simulation scheme. In the proposed multiscale simulation, multiple aspects – optical calculation, mesoscale simulation, device scale simulation and optimal power conversion efficiency searching modules – were studied together to give an optimal result. Through the simulation work, dependencies of device performance on the tandem structures were clarified by tuning the thickness, donor/acceptor weight ratio as well as the donor–acceptor distribution in both active layers of the two sub-cells. Finally, employing searching algorithms, we optimized the power conversion efficiency of the tandem polymer solar cells and located the optimal device structure parameters. With the proposed multiscale simulation strategy, poly(3-hexylthiophene)/phenyl-C61-butyric acid methyl ester and (poly[2,6-(4,4-bis-(2-ethylhexyl)-4H-cyclopenta[2,1-b;3,4-b]dithiophene)-alt-4,7-(2,1,3-benzothiadiazole)])/phenyl-C61-butyric acid methyl ester based tandem solar cells were simulated and optimized as an example. Two configurations with different sub-cell sequences in the tandem photovoltaic device were tested and compared. The comparison of the simulation results between the two configurations demonstrated that the balance between the two sub-cells is of critical importance for tandem organic photovoltaics to achieve high performance. Consistency between the optimization results and the reported experimental results proved the effectiveness of the proposed simulation scheme.

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