Ternary‐Blend Polymer Solar Cells Combining Fullerene and Nonfullerene Acceptors to Synergistically Boost the Photovoltaic Performance

Lu, Heng; Zhang, Jicheng; Chen, Jianya; Liu, Qian; Gong, Xue; Feng, Shiyu; Xu, Xinjun; Ma, Wei; Bo, Zhishan

doi:10.1002/adma.201603588

Cited by 273 publications

(198 citation statements)

References 46 publications

Supporting

Mentioning

193

Contrasting

Order By: Relevance

“…[31,41] The relative research work about how to quantitatively describe the miscibility in ternary systems has scarcely been reported. [31,41] The relative research work about how to quantitatively describe the miscibility in ternary systems has scarcely been reported.…”

Section: Introductionmentioning

confidence: 99%

Miscibility Tuning for Optimizing Phase Separation and Vertical Distribution toward Highly Efficient Organic Solar Cells

et al. 2019

View full text Add to dashboard Cite

Blending multidonor or multiacceptor organic materials as ternary devices has been recognized as an efficient and potential method to improve the power conversion efficiency of bulk heterojunction devices or single‐junction components in tandem design. In this work, a highly crystalline molecule, DRCN5T, is involved into a PTB7‐Th:PC 70 BM system to fabricate large‐area organic solar cells (OSCs) whose blend film thickness is up to 270 nm, achieving an impressive performance of 11.1%. The significant improvement of OSCs after adding DRCN5T is due to the formation of an interconnected fibrous network with decreased π–π stacking and enhanced domain purity, in addition to the optimized vertical distribution of PTB7‐Th and PC 70 BM, producing more effective charge separation, transport, and collection. The optimized morphology and performance are actually determined by the miscibility in different components, which can be quantitatively described by the Flory–Huggins interaction parameter of −0.80 and 2.94 in DRCN5T:PTB7‐Th and DRCN5T:PC 70 BM blends, respectively. The findings in this work can potentially guide the selection of an appropriate third additive for high‐performance OSCs for the sake of large‐area printing and roll‐to‐roll fabrication from the view of miscibility.

show abstract

Section: Introductionmentioning

confidence: 99%

Miscibility Tuning for Optimizing Phase Separation and Vertical Distribution toward Highly Efficient Organic Solar Cells

et al. 2019

View full text Add to dashboard Cite

show abstract

“…[36][37][38] Recent developments in NFAs offer a wider choice of acceptor materials for ternary devices. [39][40][41][42][43][44][45] In terms of ternary blend incorporating two NFAs, impressive progresses have been also obtained. [21,22] Different ternary blends containing one NFA paired with two donors or one donor/one fullerene derivative exhibited high PCEs over 12%.…”

mentioning

confidence: 99%

“…[4,5] Consequently, much effort has been devoted to the study of NFA-based ternary OSCs. [39][40][41][42][43][44][45] In terms of ternary blend incorporating two NFAs, impressive progresses have been also obtained. [39][40][41][42][43][44][45] In terms of ternary blend incorporating two NFAs, impressive progresses have been also obtained.…”

mentioning

confidence: 99%

Morphology Control Enables Efficient Ternary Organic Solar Cells

et al. 2018

View full text Add to dashboard Cite

Ternary organic solar cells are promising alternatives to the binary counterpart due to their potential in achieving high performance. Although a growing number of ternary organic solar cells are recently reported, less effort is devoted to morphology control. Here, ternary organic solar cells are fabricated using a wide-bandgap polymer PBT1-C as the donor, a crystalline fused-ring electron acceptor ITIC-2Cl, and an amorphous fullerene derivative indene-C bisadduct (ICBA) as the acceptor. It is found that ICBA can disturb π-π interactions of the crystalline ITIC-2Cl molecules in ternary blends and then help to form more uniform morphology. As a result, incorporation of 20% ICBA in the PBT1-C:ITIC-2Cl blend enables efficient charge dissociation, negligible bimolecular recombination, and balanced charge carrier mobilities. An impressive power conversion efficiency (PCE) of 13.4%, with a high fill factor (FF) of 76.8%, is eventually achieved, which represents one of the highest PCEs reported so far for organic solar cells. The results manifest that the adoption of amorphous fullerene acceptor is an effective approach to optimizing the ternary blend morphology and thereby increases the solar cell performance.

show abstract

“…The 3TT‐FIC acceptor shows a wide (100) reflection at 0.35 Å −1 and a π–π stacking in the OOP direction at 1.80 Å −1 . The diffraction peak of PC 71 BM located at 1.32 Å −1 both in the IP and OOP direction 24, 25. However, there was no evident PC 71 BM diffraction peak in the ternary blend film owing to the minor addition of PC 71 BM .…”

mentioning

confidence: 96%

A New Nonfullerene Acceptor with Near Infrared Absorption for High Performance Ternary‐Blend Organic Solar Cells with Efficiency over 13%

et al. 2018

View full text Add to dashboard Cite

A new acceptor–donor–acceptor (A–D–A) type nonfullerene acceptor, 3TT‐FIC, which has three fused thieno[3,2‐b]thiophene as the central core and difluoro substituted indanone as the end groups, is designed and synthesized. 3TT‐FIC exhibits broad and strong absorption with extended onset absorption to 995 nm and a low optical bandgap of 1.25 eV. The binary device based on 3TT‐FIC and the polymer PTB7‐Th exhibits a power conversion efficiency (PCE) of 12.21% with a high short circuit current density ( J sc) of 25.89 mA cm−2. To fine‐tune the morphology and make full use of the visible region sunlight, phenyl‐C71‐butyricacid‐methyl ester (PC71BM) is used as the third component to fabricate ternary devices. In contrast to the binary devices, the ternary blend organic solar cells show significantly enhanced EQE ranging from 300 to 700 nm and thus an improved J sc with a high value of 27.73 mA cm−2. A high PCE with a value of 13.54% is achieved for the ternary devices, which is one of the highest efficiencies in single junction organic solar cells reported to date. The results provide valuable insight for the ternary devices in which the external quantum efficiency (EQE) induced by the third component is evidently observed and directly contributed to the enhancement of the device efficiency.

show abstract

Ternary‐Blend Polymer Solar Cells Combining Fullerene and Nonfullerene Acceptors to Synergistically Boost the Photovoltaic Performance

Cited by 273 publications

References 46 publications

Miscibility Tuning for Optimizing Phase Separation and Vertical Distribution toward Highly Efficient Organic Solar Cells

Miscibility Tuning for Optimizing Phase Separation and Vertical Distribution toward Highly Efficient Organic Solar Cells

Morphology Control Enables Efficient Ternary Organic Solar Cells

A New Nonfullerene Acceptor with Near Infrared Absorption for High Performance Ternary‐Blend Organic Solar Cells with Efficiency over 13%

Contact Info

Product

Resources

About