1
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Wu Y, Salamat CZ, León Ruiz A, Simafranca AF, Akmanşen-Kalayci N, Wu EC, Doud E, Mehmedović Z, Lindemuth JR, Phan MD, Spokoyny AM, Schwartz BJ, Tolbert SH. Using Bulky Dodecaborane-Based Dopants to Produce Mobile Charge Carriers in Amorphous Semiconducting Polymers. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2024; 36:5552-5562. [PMID: 38883433 PMCID: PMC11171275 DOI: 10.1021/acs.chemmater.4c00502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Revised: 04/19/2024] [Accepted: 04/22/2024] [Indexed: 06/18/2024]
Abstract
Conjugated polymers are a versatile class of electronic materials featured in a variety of next-generation electronic devices. The utility of such polymers is contingent in large part on their electrical conductivity, which depends both on the density of charge carriers (polarons) and on the carrier mobility. Carrier mobility, in turn, is largely controlled by the separation between the polarons and dopant counterions, as counterions can produce Coulombic traps. In previous work, we showed that large dopants based on dodecaborane (DDB) clusters were able to reduce Coulombic binding and thus increase carrier mobility in regioregular (RR) poly(3-hexylthiophene-2,5-diyl) (P3HT). Here, we use a DDB-based dopant to study the effects of polaron-counterion separation in chemically doped regiorandom (RRa) P3HT, which is highly amorphous. X-ray scattering shows that the DDB dopants, despite their large size, can partially order the RRa P3HT during doping and produce a doped polymer crystal structure similar to that of DDB-doped RR P3HT; Alternating Field (AC) Hall measurements also confirm a similar hole mobility. We also show that use of the large DDB dopants successfully reduces Coulombic binding of polarons and counterions in amorphous polymer regions, resulting in a 77% doping efficiency in RRa P3HT films. The DDB dopants are able to produce RRa P3HT films with a 4.92 S/cm conductivity, a value that is ∼200× higher than that achieved with 3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane (F4TCNQ), the traditional dopant molecule. These results show that tailoring dopants to produce mobile carriers in both the amorphous and semicrystalline regions of conjugated polymers is an effective strategy for increasing achievable polymer conductivities, particularly in low-cost polymers with random regiochemistry. The results also emphasize the importance of dopant size and shape for producing Coulombically unbound, mobile polarons capable of electrical conduction in less-ordered materials.
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Affiliation(s)
- Yutong Wu
- Department of Chemistry and Biochemistry, University of California Los Angeles, Los Angeles, California 90095-1569, United States
| | - Charlene Z Salamat
- Department of Chemistry and Biochemistry, University of California Los Angeles, Los Angeles, California 90095-1569, United States
| | - Alex León Ruiz
- Department of Chemistry and Biochemistry, University of California Los Angeles, Los Angeles, California 90095-1569, United States
| | - Alexander F Simafranca
- Department of Chemistry and Biochemistry, University of California Los Angeles, Los Angeles, California 90095-1569, United States
| | - Nesibe Akmanşen-Kalayci
- Department of Chemistry and Biochemistry, University of California Los Angeles, Los Angeles, California 90095-1569, United States
| | - Eric C Wu
- Department of Chemistry and Biochemistry, University of California Los Angeles, Los Angeles, California 90095-1569, United States
| | - Evan Doud
- Department of Chemistry and Biochemistry, University of California Los Angeles, Los Angeles, California 90095-1569, United States
| | - Zerina Mehmedović
- Department of Chemistry and Biochemistry, University of California Los Angeles, Los Angeles, California 90095-1569, United States
| | | | - Minh D Phan
- Center for Neutron Science, Department of Chemical and Biochemical Engineering, University of Delaware, Newark, Delaware 19716, United States
| | - Alexander M Spokoyny
- Department of Chemistry and Biochemistry, University of California Los Angeles, Los Angeles, California 90095-1569, United States
| | - Benjamin J Schwartz
- Department of Chemistry and Biochemistry, University of California Los Angeles, Los Angeles, California 90095-1569, United States
| | - Sarah H Tolbert
- Department of Chemistry and Biochemistry, University of California Los Angeles, Los Angeles, California 90095-1569, United States
- Department of Materials Science and Engineering, University of California Los Angeles, Los Angeles, California 90095-1595, United States
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2
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Jung H, Kim H, Kim J, Jang S, Lee Y. Side‐chain engineering of regioregular copolymers for high‐performance polymer solar cells processed with nonhalogenated solvents. B KOREAN CHEM SOC 2022. [DOI: 10.1002/bkcs.12606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Hyeonwoo Jung
- Department of Energy Science and Engineering Daegu Gyeongbuk Institute of Science & Technology Daegu Republic of Korea
| | - Honggi Kim
- Department of Energy Science and Engineering Daegu Gyeongbuk Institute of Science & Technology Daegu Republic of Korea
| | - Jongyoun Kim
- Department of Energy Science and Engineering Daegu Gyeongbuk Institute of Science & Technology Daegu Republic of Korea
| | - Soyeong Jang
- Department of Energy Science and Engineering Daegu Gyeongbuk Institute of Science & Technology Daegu Republic of Korea
| | - Youngu Lee
- Department of Energy Science and Engineering Daegu Gyeongbuk Institute of Science & Technology Daegu Republic of Korea
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3
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He B, Yin Q, Xie B, Zhang J, Xie R, Hu Z, Peng X, Huang F, Cao Y. Influence of the –CN substitution position on the performance of dicyanodistyrylbenzene-based polymer solar cells. Polym Chem 2020. [DOI: 10.1039/c9py01781j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We developed four novel copolymers based on DCB units with differently positioned –CN groups and investigated their effects on the film morphology and performance of non-fullerene polymer solar cells.
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Affiliation(s)
- Baitian He
- Institute of Polymer Optoelectronic Materials and Devices
- State Key Laboratory of Luminescent Materials and Devices
- South China University of Technology
- Guangzhou 510640
- P. R. China
| | - Qingwu Yin
- Institute of Polymer Optoelectronic Materials and Devices
- State Key Laboratory of Luminescent Materials and Devices
- South China University of Technology
- Guangzhou 510640
- P. R. China
| | - Boming Xie
- Institute of Polymer Optoelectronic Materials and Devices
- State Key Laboratory of Luminescent Materials and Devices
- South China University of Technology
- Guangzhou 510640
- P. R. China
| | - Jie Zhang
- Institute of Polymer Optoelectronic Materials and Devices
- State Key Laboratory of Luminescent Materials and Devices
- South China University of Technology
- Guangzhou 510640
- P. R. China
| | - Ruihao Xie
- Institute of Polymer Optoelectronic Materials and Devices
- State Key Laboratory of Luminescent Materials and Devices
- South China University of Technology
- Guangzhou 510640
- P. R. China
| | - Zhicheng Hu
- Institute of Polymer Optoelectronic Materials and Devices
- State Key Laboratory of Luminescent Materials and Devices
- South China University of Technology
- Guangzhou 510640
- P. R. China
| | - Xiaobin Peng
- Institute of Polymer Optoelectronic Materials and Devices
- State Key Laboratory of Luminescent Materials and Devices
- South China University of Technology
- Guangzhou 510640
- P. R. China
| | - Fei Huang
- Institute of Polymer Optoelectronic Materials and Devices
- State Key Laboratory of Luminescent Materials and Devices
- South China University of Technology
- Guangzhou 510640
- P. R. China
| | - Yong Cao
- Institute of Polymer Optoelectronic Materials and Devices
- State Key Laboratory of Luminescent Materials and Devices
- South China University of Technology
- Guangzhou 510640
- P. R. China
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4
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Ali A, Rafiq MI, Zhang Z, Cao J, Geng R, Zhou B, Tang W. TD-DFT benchmark for UV-visible spectra of fused-ring electron acceptors using global and range-separated hybrids. Phys Chem Chem Phys 2020; 22:7864-7874. [DOI: 10.1039/d0cp00060d] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The accuracy of Time-Dependent Density Functional Theory in predicting the vertical absorption wavelength of 50 widely-used fused-ring electron acceptors (FREAs) has been investigated by considering the solvent effects.
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Affiliation(s)
- Amjad Ali
- School of Chemical Engineering
- Nanjing University of Science and Technology
- Nanjing 210094
- People's Republic of China
| | - Muhammad Imran Rafiq
- School of Chemical Engineering
- Nanjing University of Science and Technology
- Nanjing 210094
- People's Republic of China
| | - Zhuohan Zhang
- School of Chemical Engineering
- Nanjing University of Science and Technology
- Nanjing 210094
- People's Republic of China
| | - Jinru Cao
- School of Chemical Engineering
- Nanjing University of Science and Technology
- Nanjing 210094
- People's Republic of China
| | - Renyong Geng
- School of Chemical Engineering
- Nanjing University of Science and Technology
- Nanjing 210094
- People's Republic of China
| | - Baojing Zhou
- School of Chemical Engineering
- Nanjing University of Science and Technology
- Nanjing 210094
- People's Republic of China
| | - Weihua Tang
- School of Chemical Engineering
- Nanjing University of Science and Technology
- Nanjing 210094
- People's Republic of China
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5
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Dey S. Recent Progress in Molecular Design of Fused Ring Electron Acceptors for Organic Solar Cells. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2019; 15:e1900134. [PMID: 30989808 DOI: 10.1002/smll.201900134] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Revised: 02/24/2019] [Indexed: 05/20/2023]
Abstract
The quest for sustainable energy sources has led to accelerated growth in research of organic solar cells (OSCs). A solution-processed bulk-heterojunction (BHJ) OSC generally contains a donor and expensive fullerene acceptors (FAs). The last 20 years have been devoted by the OSC community to developing donor materials, specifically low bandgap polymers, to complement FAs in BHJs. The current improvement from ≈2.5% in 2013 to 17.3% in 2018 in OSC performance is primarily credited to novel nonfullerene acceptors (NFA), especially fused ring electron acceptors (FREAs). FREAs offer unique advantages over FAs, like broad absorption of solar radiation, and they can be extensively chemically manipulated to tune optoelectronic and morphological properties. Herein, the current status in FREA-based OSCs is summarized, such as design strategies for both wide and narrow bandgap FREAs for BHJ, all-small-molecule OSCs, semi-transparent OSC, ternary, and tandem solar cells. The photovoltaics parameters for FREAs are summarized and discussed. The focus is on the various FREA structures and their role in optical and morphological tuning. Besides, the advantages and drawbacks of both FAs and NFAs are discussed. Finally, an outlook in the field of FREA-OSCs for future material design and challenges ahead is provided.
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Affiliation(s)
- Somnath Dey
- Department of Chemistry, Texas A&M University at Qatar, P.O. Box 23874, Doha, Qatar
- Department of Chemistry & Earth Sciences, Qatar University, P.O. Box 2713, Doha, Qatar
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6
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Cui C. Recent Progress in Fused-Ring Based Nonfullerene Acceptors for Polymer Solar Cells. Front Chem 2018; 6:404. [PMID: 30320056 PMCID: PMC6167441 DOI: 10.3389/fchem.2018.00404] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Accepted: 08/20/2018] [Indexed: 11/13/2022] Open
Abstract
The progress of bulk-heterojunction (BHJ) polymer solar cells (PSCs) is closely related to the innovation of photoactive materials (donor and acceptor materials), interface engineering, and device optimization. Especially, the development of the photoactive materials dominates the research filed in the past decades. Photoactive materials are basically classified as p-type organic semiconductor donor (D) and an n-type organic semiconductor acceptor (A). In the past two decades, fullerene derivatives are the dominant acceptors for high efficiency PSCs. Nevertheless, the limited absorption and challenging structural tunability of fullerenes hinder further improve the efficiency of PSCs. Encouragingly, the recent progresses of fused-ring based A-D-A type nonfullerene acceptors exhibit great potential in enhancing the photovoltaic performance of devices, driving the power conversion efficiency to over 13%. Such kind of nonfullerene acceptors is usually based on indacenodithiophene (IDT) or its extending backbone core and end-caped with strong electron-withdrawing group. Owing to the strong push-pulling effects, the acceptors possess strong absorption in the visible-NIR region and low-lying HOMO (highest occupied molecular orbital) level, which can realize both high open-circuit voltage and short-circuit current density of the devices. Moreover, the photo-electronic and aggregative properties of the acceptors can be flexibly manipulated via structural design. Many strategies have been successfully employed to tune the energy levels, absorption features, and aggregation properties of the fused-ring based acceptors. In this review, we will summarize the recent progress in developing highly efficient fused-ring based nonfullerene acceptors. We will mainly focus our discussion on the correlating factors of molecular structures to their absorption, molecular energy levels, and photovoltaic performance. It is envisioned that an analysis of the relationship between molecular structures and photovoltaic properties would contribute to a better understanding of this kind of acceptors for high-efficiency PSCs.
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Affiliation(s)
- Chaohua Cui
- Laboratory of Advanced Optoelectronic Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, China
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7
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Zhang Z, Yuan J, Wei Q, Zou Y. Small-Molecule Electron Acceptors for Efficient Non-fullerene Organic Solar Cells. Front Chem 2018; 6:414. [PMID: 30283772 PMCID: PMC6157397 DOI: 10.3389/fchem.2018.00414] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2018] [Accepted: 08/23/2018] [Indexed: 11/13/2022] Open
Abstract
The development of organic electron acceptor materials is one of the key factors for realizing high performance organic solar cells. Compared to traditional fullerene acceptor materials, non-fullerene electron acceptors have attracted much attention due to their better optoelectronic tunabilities and lower cost as well as higher stability. Non-fullerene organic solar cells have recently experienced a rapid increase with power conversion efficiency of single-junction devices over 14% and a bit higher than 15% for tandem solar cells. In this review, two types of promising small-molecule electron acceptors are discussed: perylene diimide based acceptors and acceptor(A)-donor(D)-acceptor(A) fused-ring electron acceptors, focusing on the effects of structural modification on absorption, energy levels, aggregation and performances. We strongly believe that further development of non-fullerene electron acceptors will hold bright future for organic solar cells.
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Affiliation(s)
| | | | | | - Yingping Zou
- College of Chemistry and Chemical Engineering, Central South University, Changsha, China
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8
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Nian Y, Pan F, Li S, Jiang H, Feng S, Zhang L, Cao Y, Chen J. Benzoxadiazole and Benzoselenadiazole as π-Bridges in Nonfullerene Acceptors for Efficient Polymer Solar Cells. ASIAN J ORG CHEM 2018. [DOI: 10.1002/ajoc.201800389] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Yaowen Nian
- Institute of Polymer Optoelectronic Materials & Devices, State Key Laboratory of Luminescent Materials & Devices; South China University of Technology; Guangzhou 510640 P. R. China
| | - Feilong Pan
- Institute of Polymer Optoelectronic Materials & Devices, State Key Laboratory of Luminescent Materials & Devices; South China University of Technology; Guangzhou 510640 P. R. China
| | - Suhan Li
- Institute of Polymer Optoelectronic Materials & Devices, State Key Laboratory of Luminescent Materials & Devices; South China University of Technology; Guangzhou 510640 P. R. China
| | - Haiying Jiang
- Institute of Polymer Optoelectronic Materials & Devices, State Key Laboratory of Luminescent Materials & Devices; South China University of Technology; Guangzhou 510640 P. R. China
| | - Shizhen Feng
- Institute of Polymer Optoelectronic Materials & Devices, State Key Laboratory of Luminescent Materials & Devices; South China University of Technology; Guangzhou 510640 P. R. China
| | - Lianjie Zhang
- Institute of Polymer Optoelectronic Materials & Devices, State Key Laboratory of Luminescent Materials & Devices; South China University of Technology; Guangzhou 510640 P. R. China
| | - Yong Cao
- Institute of Polymer Optoelectronic Materials & Devices, State Key Laboratory of Luminescent Materials & Devices; South China University of Technology; Guangzhou 510640 P. R. China
| | - Junwu Chen
- Institute of Polymer Optoelectronic Materials & Devices, State Key Laboratory of Luminescent Materials & Devices; South China University of Technology; Guangzhou 510640 P. R. China
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9
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Kim M, Lee J, Sin DH, Lee H, Woo HY, Cho K. Nonfullerene/Fullerene Acceptor Blend with a Tunable Energy State for High-Performance Ternary Organic Solar Cells. ACS APPLIED MATERIALS & INTERFACES 2018; 10:25570-25579. [PMID: 29983048 DOI: 10.1021/acsami.8b06445] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Ternary blending is an effective strategy for broadening the absorption range of the active layer in bulk heterojunction polymer solar cells and for constructing an efficient cascade energy landscape at the donor/acceptor interface to achieve high efficiencies. In this study, we report efficient ternary blend solar cells containing an acceptor alloy consisting of the indacenodithiophene-based nonfullerene material, IDT2BR, and the fullerene material, phenyl-C71-butyric acid methyl ester (PC71BM). The IDT2BR materials mix fully with PC71BM materials, and the energy state of this phase can be tuned by varying the blending ratio. We performed photoluminescence and external quantum efficiency studies and found that the ternary charge cascade structure efficiently transfers the photogenerated charges from the polymer to IDT2BR and finally to PC71BM materials. Ternary blend devices containing the IDT2BR:PC71BM acceptor blend and various types of donor polymers were found to exhibit power conversion efficiencies (PCEs) improved by more than 10% over the PCEs of the binary blend devices.
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Affiliation(s)
- Min Kim
- Department of Chemical Engineering , Pohang University of Science and Technology , Pohang 37673 , Korea
| | - Jaewon Lee
- Department of Chemical Engineering , Pohang University of Science and Technology , Pohang 37673 , Korea
| | - Dong Hun Sin
- Department of Chemical Engineering , Pohang University of Science and Technology , Pohang 37673 , Korea
| | - Hansol Lee
- Department of Chemical Engineering , Pohang University of Science and Technology , Pohang 37673 , Korea
| | - Han Young Woo
- Department of Chemistry , Korea University , Seoul 02841 , Republic of Korea
| | - Kilwon Cho
- Department of Chemical Engineering , Pohang University of Science and Technology , Pohang 37673 , Korea
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10
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Yang Y, Wang J, Xu H, Zhan X, Chen X. Nonfullerene Acceptor with "Donor-Acceptor Combined π-Bridge" for Organic Photovoltaics with Large Open-Circuit Voltage. ACS APPLIED MATERIALS & INTERFACES 2018; 10:18984-18992. [PMID: 29761703 DOI: 10.1021/acsami.8b04541] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
In this work, a kind of "donor-acceptor (D-A) combined π-bridge" based on the regioselective reactivity of monofluoro-substituted benzothiadiazole (FBT) to link a thiophene ring has been designed to construct a new A-π-D-π-A-type small molecular acceptor (IDT-FBTR) with indacenodithiophene (IDT) as a central core (D) and 3-octyl-2-(1,1-dicyanomethylene)rhodanine as an electron-withdrawing terminal group (A). Because of the strong intramolecular push-pull electron effect, the IDT-FBTR shows a strong and broad intramolecular charge-transfer absorption band in the range of 500-750 nm. Especially, as an electron-deficient FBT unit (A') and an electron-rich thiophene ring (D') in "D-A combined π-bridge" exert an "offset effect" to regulate the highest occupied molecular orbital (HOMO)-lowest unoccupied molecular orbital (LUMO) energy levels of the molecule, a relatively high LUMO energy level can be maintained for IDT-FBTR that is helpful to enhance the open-circuit voltage ( Voc) for highly efficient organic solar cells (OSCs). Therefore, the optimized OSC device based on IDT-FBTR as the acceptor and PTB7-Th as the donor shows a much high Voc of 1.02 V with a relatively low Eloss of 0.56 eV and a best power conversion efficiency of 9.14%.
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Affiliation(s)
- Yang Yang
- Hubei Key Laboratory on Organic and Polymeric Opto-Electronic Materials, College of Chemistry and Molecular Sciences , Wuhan University , Wuhan 430072 , China
| | - Jiacheng Wang
- Hubei Key Laboratory on Organic and Polymeric Opto-Electronic Materials, College of Chemistry and Molecular Sciences , Wuhan University , Wuhan 430072 , China
| | - Han Xu
- Hubei Key Laboratory on Organic and Polymeric Opto-Electronic Materials, College of Chemistry and Molecular Sciences , Wuhan University , Wuhan 430072 , China
| | - Xiaowei Zhan
- Department of Materials Science and Engineering, College of Engineering , Peking University , Beijing 100871 , China
| | - Xingguo Chen
- Hubei Key Laboratory on Organic and Polymeric Opto-Electronic Materials, College of Chemistry and Molecular Sciences , Wuhan University , Wuhan 430072 , China
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11
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Wu Q, Zhao D, Goldey MB, Filatov AS, Sharapov V, Colón YJ, Cai Z, Chen W, de Pablo J, Galli G, Yu L. Intra-molecular Charge Transfer and Electron Delocalization in Non-fullerene Organic Solar Cells. ACS APPLIED MATERIALS & INTERFACES 2018; 10:10043-10052. [PMID: 29498504 DOI: 10.1021/acsami.7b18717] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Two types of electron acceptors were synthesized by coupling two kinds of electron-rich cores with four equivalent perylene diimides (PDIs) at the α-position. With fully aromatic cores, TPB and TPSe have π-orbitals spread continuously over the whole aromatic conjugated backbone, unlike TPC and TPSi, which contain isolated PDI units due to the use of a tetrahedron carbon or silicon linker. Density functional theory calculations of the projected density of states showed that the highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) for TPB are localized in separate regions of space. Further, the LUMO of TPB shows a greater contribution from the orbitals belonging to the connective core of the molecules than that of TPC. Overall, the properties of the HOMO and LUMO point at increased intra-molecular delocalization of negative charge carriers for TPB and TPSe than for TPC and TPSi and hence at a more facile intra-molecular charge transfer for the former. The film absorption and emission spectra showed evidences for the inter-molecular electron delocalization in TPB and TPSe, which is consistent with the network structure revealed by X-ray diffraction studies on single crystals of TPB. These features benefit the formation of charge transfer states and/or facilitate charge transport. Thus, higher electron mobility and higher charge dissociation probabilities under Jsc condition were observed in blend films of TPB:PTB7-Th and TPSe:PTB7-Th than those in TPC:PTB7-Th and TPSi:PTB7-Th blend films. As a result, the Jsc and fill factor values of 15.02 mA/cm2, 0.58 and 14.36 mA/cm2, 0.55 for TPB- and TPSe-based solar cell are observed, whereas those for TPC and TPSi are 11.55 mA/cm2, 0.47 and 10.35 mA/cm2, 0.42, respectively.
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Affiliation(s)
- Qinghe Wu
- Department of Chemistry, Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province , Shantou University , Guangdong 515063 , P. R. China
| | - Donglin Zhao
- Department of Chemistry, The James Franck Institute , The University of Chicago , 929 E 57th Street , Chicago , Illinois 60637 , United States
| | - Matthew B Goldey
- Institute for Molecular Engineering , The University of Chicago , 5747 South Ellis Avenue , Chicago , Illinois 60637 , United States
| | - Alexander S Filatov
- Department of Chemistry, The James Franck Institute , The University of Chicago , 929 E 57th Street , Chicago , Illinois 60637 , United States
| | - Valerii Sharapov
- Department of Chemistry, The James Franck Institute , The University of Chicago , 929 E 57th Street , Chicago , Illinois 60637 , United States
| | - Yamil J Colón
- Institute for Molecular Engineering, Materials Science Division , Argonne National Laboratory , 9700 Cass Avenue , Lemont , Illinois 60439 , United States
- Institute for Molecular Engineering , The University of Chicago , 5747 South Ellis Avenue , Chicago , Illinois 60637 , United States
| | - Zhengxu Cai
- Department of Chemistry, The James Franck Institute , The University of Chicago , 929 E 57th Street , Chicago , Illinois 60637 , United States
| | - Wei Chen
- Institute for Molecular Engineering, Materials Science Division , Argonne National Laboratory , 9700 Cass Avenue , Lemont , Illinois 60439 , United States
- Institute for Molecular Engineering , The University of Chicago , 5747 South Ellis Avenue , Chicago , Illinois 60637 , United States
| | - Juan de Pablo
- Institute for Molecular Engineering, Materials Science Division , Argonne National Laboratory , 9700 Cass Avenue , Lemont , Illinois 60439 , United States
- Institute for Molecular Engineering , The University of Chicago , 5747 South Ellis Avenue , Chicago , Illinois 60637 , United States
| | - Giulia Galli
- Institute for Molecular Engineering, Materials Science Division , Argonne National Laboratory , 9700 Cass Avenue , Lemont , Illinois 60439 , United States
- Institute for Molecular Engineering , The University of Chicago , 5747 South Ellis Avenue , Chicago , Illinois 60637 , United States
| | - Luping Yu
- Department of Chemistry, The James Franck Institute , The University of Chicago , 929 E 57th Street , Chicago , Illinois 60637 , United States
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12
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Liao Z, Wang Y, An Y, Tan Y, Meng X, Wu F, Chen L, Chen Y. Post-Treatment-Free Main Chain Donor and Side Chain Acceptor (D-s-A) Copolymer for Efficient Nonfullerene Solar Cells with a Small Voltage Loss. Macromol Rapid Commun 2018; 39:e1700706. [PMID: 29405489 DOI: 10.1002/marc.201700706] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Revised: 12/14/2017] [Indexed: 11/07/2022]
Abstract
Main chain donor and side chain acceptor (D-s-A) copolymers are an important branch of the D-A copolymer family. However, the development of D-s-A copolymers significantly falls behind the alternative D-A copolymers, especially for organic solar cells, because a breakthrough in device performance is not yet obtained with a reported power conversion efficiency (PCE) of 2%-4%. Herein, a newly developed D-s-A copolymer PDRCNBDT, bearing 2-(1, 1-dicyanomethylene) rhodanine pendant group as the donor material, delivers a high PCE of 5.3% for nonfullerene solar cells. To the best of our knowledge, this is the best value reported for D-s-A copolymers to date. The improved PCE is observed to be associated with a very small energy loss (Eloss ) of 0.57 eV, accompanied by a high open-circuit voltage (Voc ) of 1.015 eV. It is important to note that this efficient D-s-A copolymer is employed in organic solar cells (OSCs), free of additive and annealing treatments.
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Affiliation(s)
- Zhihui Liao
- College of Chemistry, Nanchang University, 999 Xuefu Avenue, Nanchang, 330031, China
| | - Yilin Wang
- College of Chemistry, Nanchang University, 999 Xuefu Avenue, Nanchang, 330031, China.,Jiangxi Provincial Key Laboratory of New Energy Chemistry/Institute of Polymers, Nanchang University, 999 Xuefu Avenue, Nanchang, 330031, China
| | - Yongkang An
- College of Chemistry, Nanchang University, 999 Xuefu Avenue, Nanchang, 330031, China.,Jiangxi Provincial Key Laboratory of New Energy Chemistry/Institute of Polymers, Nanchang University, 999 Xuefu Avenue, Nanchang, 330031, China
| | - Yun Tan
- College of Chemistry, Nanchang University, 999 Xuefu Avenue, Nanchang, 330031, China.,Jiangxi Provincial Key Laboratory of New Energy Chemistry/Institute of Polymers, Nanchang University, 999 Xuefu Avenue, Nanchang, 330031, China
| | - Xiangchuang Meng
- College of Chemistry, Nanchang University, 999 Xuefu Avenue, Nanchang, 330031, China.,Jiangxi Provincial Key Laboratory of New Energy Chemistry/Institute of Polymers, Nanchang University, 999 Xuefu Avenue, Nanchang, 330031, China
| | - Feiyan Wu
- College of Chemistry, Nanchang University, 999 Xuefu Avenue, Nanchang, 330031, China.,Jiangxi Provincial Key Laboratory of New Energy Chemistry/Institute of Polymers, Nanchang University, 999 Xuefu Avenue, Nanchang, 330031, China
| | - Lie Chen
- College of Chemistry, Nanchang University, 999 Xuefu Avenue, Nanchang, 330031, China.,Jiangxi Provincial Key Laboratory of New Energy Chemistry/Institute of Polymers, Nanchang University, 999 Xuefu Avenue, Nanchang, 330031, China
| | - Yiwang Chen
- College of Chemistry, Nanchang University, 999 Xuefu Avenue, Nanchang, 330031, China
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13
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Side-chain modification of polyethylene glycol on conjugated polymers for ternary blend all-polymer solar cells with efficiency up to 9.27%. Sci China Chem 2018. [DOI: 10.1007/s11426-017-9188-7] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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14
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Luo M, Zhang Z, Feng L, Peng H, Jiang L, Xu S, Li H, Cai F, Li Y, Zou Y. Synthesis and photovoltaic properties of a non-fullerene acceptor with F-phenylalkoxy as a side chain. NEW J CHEM 2018. [DOI: 10.1039/c8nj03941k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new acceptor–donor–acceptor (A–D–A) non-fullerene acceptor (ITIC-FOR) was synthesized and applied in non-fullerene solar cells with a PCE of up to 7.33%.
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Affiliation(s)
- Mei Luo
- College of Chemistry and Chemical Engineering, Central South University
- Changsha 410083
- P. R. China
| | - Zhenzhen Zhang
- College of Chemistry and Chemical Engineering, Central South University
- Changsha 410083
- P. R. China
| | - Liuliu Feng
- College of Chemistry and Chemical Engineering, Central South University
- Changsha 410083
- P. R. China
| | - Hongjian Peng
- College of Chemistry and Chemical Engineering, Central South University
- Changsha 410083
- P. R. China
| | - Lihui Jiang
- College of Chemistry and Chemical Engineering, Central South University
- Changsha 410083
- P. R. China
| | - Shutao Xu
- College of Chemistry and Chemical Engineering, Central South University
- Changsha 410083
- P. R. China
| | - Hang Li
- College of Chemistry and Chemical Engineering, Central South University
- Changsha 410083
- P. R. China
| | - Fangfang Cai
- College of Chemistry and Chemical Engineering, Central South University
- Changsha 410083
- P. R. China
| | - Yongfang Li
- Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences
- Beijing 100190
- P. R. China
| | - Yingping Zou
- College of Chemistry and Chemical Engineering, Central South University
- Changsha 410083
- P. R. China
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