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Duan X, Yang Y, Yu J, Liu C, Li X, Jee MH, Gao J, Chen L, Tang Z, Woo HY, Lu G, Sun Y. Solid Additive Dual-Regulates Spectral Response Enabling High-Performance Semitransparent Organic Solar Cells. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2308750. [PMID: 38289228 DOI: 10.1002/adma.202308750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 01/11/2024] [Indexed: 02/08/2024]
Abstract
Semi-transparent organic solar cells (ST-OSCs) possess significant potential for applications in vehicles and buildings due to their distinctive visual transparency. Conventional device engineering strategies are typically used to optimize photon selection and utilization at the expense of power conversion efficiency (PCE); moreover, the fixed spectral utilization range always imposes an unsatisfactory upper limit to its light utilization efficiency (LUE). Herein, a novel solid additive named 1,3-diphenoxybenzene (DB) is employed to dual-regulate donor/acceptor molecular aggregation and crystallinity, which effectively broadens the spectral response of ST-OSCs in near-infrared region. Besides, more visible light is allowed to pass through the devices, which enables ST-OSCs to possess satisfactory photocurrent and high average visible transmittance (AVT) simultaneously. Consequently, the optimal ST-OSC based on PP2+DB/BTP-eC9+DB achieves a superior LUE of 4.77%, representing the highest value within AVT range of 40-50%, which also correlates with the formation of multi-scale phase-separated morphology. Such results indicate that the ST-OSCs can simultaneously meet the requirements for minimum commercial efficiency and plant photosynthesis when integrated with the roofs of agricultural greenhouses. This work emphasizes the significance of additives to tune the spectral response in ST-OSCs, and charts the way for organic photovoltaics in economically sustainable agricultural development.
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Affiliation(s)
- Xiaopeng Duan
- School of Chemistry, Beihang University, Beijing, 100191, P. R. China
| | - Yinuo Yang
- School of Chemistry, Beihang University, Beijing, 100191, P. R. China
| | - Jifa Yu
- School of Chemistry, Xi'an Jiaotong University, Xi'an, 710054, P. R. China
| | - Chunhui Liu
- School of Chemistry, Beihang University, Beijing, 100191, P. R. China
| | - Xiaoming Li
- School of Chemistry, Beihang University, Beijing, 100191, P. R. China
| | - Min Hun Jee
- Department of Chemistry, College of Science, KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul, 136-713, Republic of Korea
| | - Jiaxin Gao
- College of Materials Science and Engineering, Donghua University, Shanghai, 201620, P. R. China
| | - Lingyu Chen
- School of Chemistry, Beihang University, Beijing, 100191, P. R. China
| | - Zheng Tang
- College of Materials Science and Engineering, Donghua University, Shanghai, 201620, P. R. China
| | - Han Young Woo
- Department of Chemistry, College of Science, KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul, 136-713, Republic of Korea
| | - Guanghao Lu
- School of Chemistry, Xi'an Jiaotong University, Xi'an, 710054, P. R. China
| | - Yanming Sun
- School of Chemistry, Beihang University, Beijing, 100191, P. R. China
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2
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Kong W, Wang J, Hu Y, Cui N, Yan C, Cai X, Cheng P. P-type Polymers in Semitransparent Organic Photovoltaics. Angew Chem Int Ed Engl 2023; 62:e202307622. [PMID: 37395558 DOI: 10.1002/anie.202307622] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 06/30/2023] [Accepted: 07/03/2023] [Indexed: 07/04/2023]
Abstract
P-type polymers are polymeric semiconducting materials that conduct holes and have extensive applications in optoelectronics such as organic photovoltaics. Taking the advantage of intrinsic discontinuous light absorption of organic semiconductors, semitransparent organic photovoltaics (STOPVs) present compelling opportunities in various potential applications such as building-integrated photovoltaics, agrivoltaics, automobiles, and wearable electronics. The characteristics of p-type polymers, including optical, electronic, and morphological properties, determine the performance of STOPVs, and the requirements for p-type polymers differ between opaque organic photovoltaics and STOPVs. Hence, in this Minireview, recent advances of p-type polymers used in STOPVs are systematically summarized, with emphasis on the effects of chemical structures, conformation structures, and aggregation structures of p-type polymers on the performance of STOPVs. Furthermore, new design concepts and guidelines are also proposed for p-type polymers to facilitate the future development of high-performance STOPVs.
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Affiliation(s)
- Weibo Kong
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, China
| | - Jiayu Wang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, China
| | - Yingyue Hu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, China
| | - Ningbo Cui
- State Key Laboratory of Hydraulics and Mountain River Engineering & College of Water Resource and Hydropower, Sichuan University, Chengdu, 610065, China
| | - Cenqi Yan
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, China
| | - Xufu Cai
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, China
| | - Pei Cheng
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, China
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3
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Sun S, Zha W, Tian C, Wei Z, Luo Q, Ma CQ, Liu W, Zhu X. Solution Processed Semi-Transparent Organic Solar Cells Over 50% Visible Transmittance Enabled by Silver Nanowire Electrode with Sandwich Structure. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2305092. [PMID: 37487579 DOI: 10.1002/adma.202305092] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Revised: 07/18/2023] [Indexed: 07/26/2023]
Abstract
Photovoltaic windows with easy installation for the power supply of household appliances have long been a desire of energy researchers. However, due to the lack of top electrodes that offer both high transparency and low sheet resistance, the development of high-transparency photovoltaic windows for indoor lighting scenarios has lagged significantly behind photovoltaic windows where privacy issues are involved. Addressing this issue, this work develops a solution-processable transparent top electrode using sandwich structure silver nanowires, realizing high transparency in semi-transparent organic solar cells. The wettability and conducting properties of the electrode are improved by a modified hole-transport layer named HP. The semi-transparent solar cell exhibits good see-through properties at a high average visible transmittance of 50.8%, with power conversion efficiency of 7.34%, and light utilization efficiency of 3.73%, which is the highest without optical modulations. Moreover, flexible devices based on the above-mentioned architecture also show excellent mechanical tolerance compared with Ag electrode counterparts, which retains 94.5% of their original efficiency after 1500 bending cycles. This work provides a valuable approach for fabricating solution-processed high transparency organic solar cells, which is essential in future applications in building integrated photovoltaics.
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Affiliation(s)
- Shaoming Sun
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Wusong Zha
- School of Nano-Tech and Nano-Bionics, University of Science and Technology of China, Hefei, 230027, P. R. China
- i-Lab & Printable Electronics Research Center, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, 215123, P. R. China
| | - Chenyang Tian
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, P. R. China
| | - Zhixiang Wei
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, P. R. China
| | - Qun Luo
- School of Nano-Tech and Nano-Bionics, University of Science and Technology of China, Hefei, 230027, P. R. China
- i-Lab & Printable Electronics Research Center, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, 215123, P. R. China
| | - Chang-Qi Ma
- School of Nano-Tech and Nano-Bionics, University of Science and Technology of China, Hefei, 230027, P. R. China
- i-Lab & Printable Electronics Research Center, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, 215123, P. R. China
| | - Wuyue Liu
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Xiaozhang Zhu
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
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4
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Duan X, Liu C, Cai Y, Ye L, Xue J, Yang Y, Ma W, Sun Y. Longitudinal Through-Hole Architecture for Efficient and Thickness-Insensitive Semitransparent Organic Solar Cells. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2302927. [PMID: 37178458 DOI: 10.1002/adma.202302927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 05/02/2023] [Indexed: 05/15/2023]
Abstract
Semi-transparent organic solar cells (ST-OSCs) have great potential for application in vehicle- or building-integrated solar energy harvesting. Ultrathin active layers and electrodes are typically utilized to guarantee high power conversion efficiency (PCE) and high average visible transmittance (AVT) simultaneously; however, such ultrathin parts are unsuitable for industrial high-throughput manufacturing. In this study, ST-OSCs are fabricated using a longitudinal through-hole architecture to achieve functional region division and to eliminate the dependence on ultrathin films. A complete circuit that vertically corresponds to the silver grid is responsible for obtaining high PCE, and the longitudinal through-holes embedded in it allow most of the light to pass through,where the overall transparency is associated with the through-hole specification rather than the thicknesses of active layer and electrode. Excellent photovoltaic performance over a wide range of transparency (9.80-60.03%), with PCEs ranging from 6.04% to 15.34% is achieved. More critically, this architecture allows printable 300-nm-thick devices to achieve a record-breaking light utilization efficiency (LUE) of 3.25%, and enables flexible ST-OSCs to exhibit better flexural endurance by dispersing the extrusion stress into the through-holes. This study paves the way for fabricating high-performance ST-OSCs and shows great promise for the commercialization of organic photovoltaics.
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Affiliation(s)
- Xiaopeng Duan
- School of Chemistry, Beihang University, Beijing, 100191, P. R. China
| | - Chunhui Liu
- School of Chemistry, Beihang University, Beijing, 100191, P. R. China
| | - Yunhao Cai
- School of Chemistry, Beihang University, Beijing, 100191, P. R. China
| | - Linglong Ye
- School of Chemistry, Beihang University, Beijing, 100191, P. R. China
| | - Jingwei Xue
- State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, 710049, P. R. China
| | - Yinuo Yang
- School of Chemistry, Beihang University, Beijing, 100191, P. R. China
| | - Wei Ma
- State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, 710049, P. R. China
| | - Yanming Sun
- School of Chemistry, Beihang University, Beijing, 100191, P. R. China
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Zhao N, Zhen T, Wu Y, Wei B, Liao Y, Liu Y. Efficient Semitransparent Organic Solar Cells Enabled by Ag Grid Electrodes and Optical Coupling Layers. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:1308. [PMID: 37110893 PMCID: PMC10142083 DOI: 10.3390/nano13081308] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 03/27/2023] [Accepted: 04/01/2023] [Indexed: 06/19/2023]
Abstract
Semitransparent organic solar cells (ST-OSCs) show great promise for building integrated photovoltaic systems. The balance between power conversion efficiency (PCE) and average visible transmittance (AVT) is a key point of ST-OSCs. We developed a novel semitransparent organic solar cell (ST-OSC) with high PCE and AVT for building integrated renewable energy applications. We used photolithography to fabricate Ag grid bottom electrodes with high figures of merit of 292.46. We also used an optimized active layer of PM6 and Y6, achieving a PCE of 10.65% and an AVT of 22.78% for our ST-OSCs. By adding optical coupling layers of CBP and LiF alternately, we further increased the AVT to 27.61% and the PCE to 10.87%. Importantly, the balance of PCE and AVT can be achieved by the integrated optimization of the active and optical coupling layers, which leads to a significant increase in light utilization efficiency (LUE). These results are of great importance for particle applications of ST-OSCs.
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Affiliation(s)
- Ning Zhao
- School of Mechanical Engineering and Automation, Shanghai University, Shanghai 200072, China
| | - Tao Zhen
- School of Mechanical Engineering and Automation, Shanghai University, Shanghai 200072, China
| | - Yizhou Wu
- School of Mechanical Engineering and Automation, Shanghai University, Shanghai 200072, China
| | - Bin Wei
- School of Mechanical Engineering and Automation, Shanghai University, Shanghai 200072, China
- Key Laboratory of Advanced Display and System Applications, Ministry of Education, Shanghai University, Shanghai 200072, China
| | - Yingjie Liao
- School of Mechanical Engineering and Automation, Shanghai University, Shanghai 200072, China
- Key Laboratory of Advanced Display and System Applications, Ministry of Education, Shanghai University, Shanghai 200072, China
| | - Yuanyuan Liu
- School of Mechanical Engineering and Automation, Shanghai University, Shanghai 200072, China
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6
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Guan S, Li Y, Yan K, Fu W, Zuo L, Chen H. Balancing the Selective Absorption and Photon-to-Electron Conversion for Semitransparent Organic Photovoltaics with 5.0% Light-Utilization Efficiency. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2205844. [PMID: 36000343 DOI: 10.1002/adma.202205844] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Revised: 08/09/2022] [Indexed: 06/15/2023]
Abstract
Efficiently converting invisible light while allowing full visible light transmission is key to achieving high-performance semitransparent organic photovoltaics (ST-OPVs). Here, a detailed balance strategy is explored to optimize the ST-OPV via taking both absorption and carrier dynamics into consideration. Based on this principle, comprehensive optimizations are carried out, including a ternary strategy, donor:acceptor blend ratio, thickness, antireflection, etc., to compromise the invisible energy conversion and visible transmission for high-performance ST-OPVs. As a result, the opaque OPV device exhibits a champion power conversion efficiency of 19.35% (certificated 19.07%), and most strikingly, the best ST-OPV shows a remarkably high light-utilization efficiency of 5.0%, where the efficiency and the average visible transmission are 12.95% and 38.67%, respectively. An efficiency of 12.09% is achieved on the upscaled device with an area of 1.05 cm2 , demonstrating its promise for large-area fabrication. These results are among the best values for ST-OPVs. Besides, it is demonstrated that the ST-OPV exhibits good infrared light-reflection capability for thermal control. This work provides a rational design of balancing the absorbing selectivity and photon-to-electron conversion for high-performance ST-OPVs, and may pave the way toward the practical application of solar windows.
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Affiliation(s)
- Shitao Guan
- State Key Laboratory of Silicon Materials, MOE Key Laboratory of Macromolecular Synthesis and Functionalization, International Research Center for X Polymers, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, P. R. China
| | - Yaokai Li
- State Key Laboratory of Silicon Materials, MOE Key Laboratory of Macromolecular Synthesis and Functionalization, International Research Center for X Polymers, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, P. R. China
| | - Kangrong Yan
- State Key Laboratory of Silicon Materials, MOE Key Laboratory of Macromolecular Synthesis and Functionalization, International Research Center for X Polymers, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, P. R. China
| | - Weifei Fu
- State Key Laboratory of Silicon Materials, MOE Key Laboratory of Macromolecular Synthesis and Functionalization, International Research Center for X Polymers, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, P. R. China
- Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, Shanxi, 030000, P. R. China
| | - Lijian Zuo
- State Key Laboratory of Silicon Materials, MOE Key Laboratory of Macromolecular Synthesis and Functionalization, International Research Center for X Polymers, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, P. R. China
- Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, Shanxi, 030000, P. R. China
- Zhejiang University-Hangzhou Global Scientific and Technological Innovation Center, Hangzhou, 310014, P. R. China
| | - Hongzheng Chen
- State Key Laboratory of Silicon Materials, MOE Key Laboratory of Macromolecular Synthesis and Functionalization, International Research Center for X Polymers, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, P. R. China
- Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, Shanxi, 030000, P. R. China
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7
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Meng X, Xing Z, Hu X, Chen Y. Large-area Flexible Organic Solar Cells: Printing Technologies and Modular Design. CHINESE JOURNAL OF POLYMER SCIENCE 2022. [DOI: 10.1007/s10118-022-2803-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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8
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Tang Y, Zheng H, Zhou X, Tang Z, Ma W, Yan H. Molecular Doping Increases the Semitransparent Photovoltaic Performance of Dilute Bulk Heterojunction Film with Discontinuous Polymer Donor Networks. SMALL METHODS 2022; 6:e2101570. [PMID: 35138038 DOI: 10.1002/smtd.202101570] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 01/14/2022] [Indexed: 06/14/2023]
Abstract
The semitransparent and colorful properties of organic solar cells (OSCs) attract intensive academic interests due to their potential application in building integrated photovoltaics, wearable electronics, and so forth. The most straightforward and effective method to tune these optical properties is varying the componential ratio in the blend film. However, the increase in device transmittance inevitably sacrifices the photovoltaic performance because of severe carrier recombination that originates from discontinuous charge-transport networks in the blend film. Herein, a strategy is proposed via the molecular-doping strategy to overcome these shortcomings. It is discovered that p-doping is able to release the trapped holes in segregated polymer domains leading to short-circuit current enhancement, while n-doping is more effective to fill the bandgap states producing a higher fill factor. More importantly, either type of doping improves the photovoltaic performance in the semitransparent photovoltaic devices. These discoveries provide a new pathway to breaking the compromise between the photovoltaic performance and optical transmittance in semitransparent OSCs, and hold promise for their future commercialization.
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Affiliation(s)
- Yabing Tang
- State Key Laboratory for Mechanical Behavior of Materials, School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an, 710049, P. R. China
| | - Hong Zheng
- Center of Nanomaterials for Renewable Energy, State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an, 710049, P. R. China
| | - Xiaobo Zhou
- State Key Laboratory for Mechanical Behavior of Materials, School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an, 710049, P. R. China
| | - Zheng Tang
- Center for Advanced Low-Dimension Materials, State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, P. R. China
| | - Wei Ma
- State Key Laboratory for Mechanical Behavior of Materials, School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an, 710049, P. R. China
| | - Han Yan
- State Key Laboratory for Mechanical Behavior of Materials, School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an, 710049, P. R. China
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9
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Meng D, Zheng R, Zhao Y, Zhang E, Dou L, Yang Y. Near-Infrared Materials: The Turning Point of Organic Photovoltaics. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2107330. [PMID: 34710251 DOI: 10.1002/adma.202107330] [Citation(s) in RCA: 52] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 10/23/2021] [Indexed: 06/13/2023]
Abstract
Near-infrared (NIR)-absorbing organic semiconductors have opened up many exciting opportunities for organic photovoltaic (OPV) research. For example, new chemistries and synthetical methodologies have been developed; especially, the breakthrough Y-series acceptors, originally invented by our group, specifically Y1, Y3, and Y6, have contributed immensely to boosting single-junction solar cell efficiency to around 19%; novel device architectures such as tandem and transparent organic photovoltaics have been realized. The concept of NIR donors/acceptors thus becomes a turning point in the OPV field. Here, the development of NIR-absorbing materials for OPVs is reviewed. According to the low-energy absorption window, here, NIR photovoltaic materials (p-type (polymers) and n-type (fullerene and nonfullerene)) are classified into four categories: 700-800 nm, 800-900 nm, 900-1000 nm, and greater than 1000 nm. Each subsection covers the design, synthesis, and utilization of various types of donor (D) and acceptor (A) units. The structure-property relationship between various kinds of D, A units and absorption window are constructed to satisfy requirements for different applications. Subsequently, a variety of applications realized by NIR materials, including transparent OPVs, tandem OPVs, photodetectors, are presented. Finally, challenges and future development of novel NIR materials for the next-generation organic photovoltaics and beyond are discussed.
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Affiliation(s)
- Dong Meng
- Department of Materials Science and Engineering and California NanoSystems Institute, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - Ran Zheng
- Department of Materials Science and Engineering and California NanoSystems Institute, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - Yepin Zhao
- Department of Materials Science and Engineering and California NanoSystems Institute, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - Elizabeth Zhang
- Department of Materials Science and Engineering and California NanoSystems Institute, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - Letian Dou
- Davidson School of Chemical Engineering and Birck Nanotechnology Center, Purdue University, West Lafayette, IN, 47907, USA
| | - Yang Yang
- Department of Materials Science and Engineering and California NanoSystems Institute, University of California, Los Angeles, Los Angeles, CA, 90095, USA
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10
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Zhao Y, Cheng P, Yang H, Wang M, Meng D, Zhu Y, Zheng R, Li T, Zhang A, Tan S, Huang T, Bian J, Zhan X, Weiss PS, Yang Y. Towards High-Performance Semitransparent Organic Photovoltaics: Dual-Functional p-Type Soft Interlayer. ACS NANO 2022; 16:1231-1238. [PMID: 34932319 DOI: 10.1021/acsnano.1c09018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Semitransparent organic photovoltaics (OPVs) have drawn significant attention for their promising potential in the field of building integrated photovoltaics such as energy-generating greenhouses. However, the conflict between the need to attain satisfying average visible transmittances for greenhouse applications and the need to maintain high power conversion efficiencies is limiting the commercialization of semitransparent OPVs. A major manifestation of this issue is the undermining of charge carrier extraction efficiency when opaque, visible-light-absorbing electrodes are substituted with semitransparent ones. Here, we incorporated a dual-function p-type compatible interlayer to modify the interface of the hole-transporting layer and the ultrathin electrode of the semitransparent devices. We find that the p-type interlayer not only enhances the charge carrier extraction of the electrode but also increases the light transmittance in the wavelength range of 400-450 nm, which covers most of the photosynthetic absorption spectrum. The modified semitransparent devices reach a power conversion efficiency of 13.7% and an average visible transmittance of 22.2%.
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Affiliation(s)
| | | | - Hangbo Yang
- Department of Electrical and Computer Engineering, University of California, Los Angeles, Los Angeles, California 90095, United States
| | - Minhuan Wang
- Key Laboratory of Materials Modification by Laser, Ion, and Electron Beams, Dalian University of Technology, Ministry of Education, School of Physics, Dalian, 116024, China
| | | | | | | | - Tengfei Li
- School of Materials Science and Engineering, Peking University, Beijing, 100871, People's Republic of China
| | | | | | | | - Jiming Bian
- Key Laboratory of Materials Modification by Laser, Ion, and Electron Beams, Dalian University of Technology, Ministry of Education, School of Physics, Dalian, 116024, China
| | - Xiaowei Zhan
- School of Materials Science and Engineering, Peking University, Beijing, 100871, People's Republic of China
| | - Paul S Weiss
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, California 90095, United States
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11
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Xue P, Cheng P, Han RPS, Zhan X. Printing fabrication of large-area non-fullerene organic solar cells. MATERIALS HORIZONS 2022; 9:194-219. [PMID: 34679154 DOI: 10.1039/d1mh01317c] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Organic solar cells (OSCs) based on a bulk heterojunction structure exhibit inherent advantages, such as low cost, light weight, mechanical flexibility, and easy processing, and they are emerging as a potential renewable energy technology. However, most studies are focused on lab-scale, small-area (<1 cm2) devices. Large-area (>1 cm2) OSCs still exhibit considerable efficiency loss during upscaling from small-area to large-area, which is a big challenge. In recent years, along with the rapid development of high-performance non-fullerene acceptors, many researchers have focused on developing large-area non-fullerene-based devices and modules. There are three essential issues in upscaling OSCs from small-area to large-area: fabrication technology, equipment development, and device component processing strategy. In this review, the challenges and solutions in fabricating high-performance large-area OSCs are discussed in terms of the abovementioned three aspects. In addition, the recent progress of large-area OSCs based on non-fullerene electron acceptors is summarized.
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Affiliation(s)
- Peiyao Xue
- Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, School of Materials Science and Engineering, Peking University, Beijing, 100871, P. R. China.
| | - Pei Cheng
- College of Polymer Science and Engineering, Sichuan University, Chengdu, 610065, P. R. China
| | - Ray P S Han
- Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, School of Materials Science and Engineering, Peking University, Beijing, 100871, P. R. China.
| | - Xiaowei Zhan
- Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, School of Materials Science and Engineering, Peking University, Beijing, 100871, P. R. China.
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Yang K, Wang J, Zhao Z, Zhou Z, Liu M, Zhang J, He Z, Zhang F. Smart Strategy: Transparent Hole-Transporting Polymer as a Regulator to Optimize Photomultiplication-type Polymer Photodetectors. ACS APPLIED MATERIALS & INTERFACES 2021; 13:21565-21572. [PMID: 33908768 DOI: 10.1021/acsami.1c06486] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Photomultiplication-type polymer photodetectors (PM-PPDs) were fabricated with hole-only transport active layers containing polymer(s): [6,6]-phenylC61-butyric acid methyl ester (PC61BM) with a weight ratio of 100:2. The rather less PC61BM content in active layers prefers to generate a large amount of isolated electron traps surrounded by polymers. Photogenerated electrons prefer to be trapped by the isolated PC61BM due to the lack of continuous electron-transport channels. The trapped electrons by the isolated PC61BM close to the Al electrode would like to seduce hole tunneling injection. The transparent polymer poly[N,N'-bis(4-butylphenyl)-N,N'-bis(phenyl)benzidine] (poly-TPD) was incorporated as a regulator to improve hole mobility (μh) and adjust the trapped-electron distribution in active layers, leading to the enhanced performance of PM-PPDs. The optimal PM-PPDs were achieved using poly(3-hexylthiophene) (P3HT):poly-TPD:PC61BM (80:20:2, wt/wt/wt) as active layers. External quantum efficiency (EQE) values at 620 nm are 3900 and 1250% for PM-PPDs based on P3HT:poly-TPD:PC61BM (80:20:2, wt/wt/wt) and P3HT:PC61BM (100:2, wt/wt) under -10 V applied voltage, respectively. The EQE at 620 nm of optimal PM-PPDs is improved from 650 to 63,000% along with the applied voltage increase from -5 to -20 V. This work provides a new strategy of using transparent polymer with large μh as a regulator for EQE and response speed improvement, as well as the flattened EQE spectral shape of PM-PPDs.
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Affiliation(s)
- Kaixuan Yang
- School of Science, Beijing Jiaotong University, Beijing 100044, China
| | - Jian Wang
- College of Physics and Electronic Engineering, Taishan University, Taian 271021, Shandong, China
| | - Zijin Zhao
- School of Science, Beijing Jiaotong University, Beijing 100044, China
| | - Zhengji Zhou
- Key Lab for Special Functional Materials, Ministry of Education, National and Local Joint Engineering Research Center for High-Efficiency Display and Lighting Technology, and School of Materials, Henan University, Kaifeng 475004, Henan, China
| | - Ming Liu
- School of Science, Beijing Jiaotong University, Beijing 100044, China
| | - Jian Zhang
- School of Materials Science and Engineering, Guilin University of Electronic Technology, 1st Jinji Road, Guilin 541004, Guangxi, China
| | - Zhiqun He
- School of Science, Beijing Jiaotong University, Beijing 100044, China
| | - Fujun Zhang
- School of Science, Beijing Jiaotong University, Beijing 100044, China
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Abstract
ConspectusEmerging solar cells that convert clean and renewable solar energy to electricity, such as organic solar cells (OSCs) and perovskite solar cells (PSCs), have attracted increasing attention owing to some merits such as facile fabrication, low cost, flexibility, and short energy payback time. The power conversion efficiencies (PCEs) of OSCs and PSCs have exceeded 18% and 25%, respectively.Fullerene derivatives have high electron affinity and mobility with an isotropic transport feature. Fullerene-based OSCs yielded superior PCEs to other acceptors and have dominated electron acceptor materials from 1995 to 2015. However, some drawbacks of fullerenes, such as weak visible absorption, limited tunability of electronic properties, laborious purification, and morphological instability, restrict further development of OSCs toward higher PCEs and practical applications. The theoretical PCE of fullerene-based OSCs is limited to ∼13% due to the relatively large energy losses. Many efforts have been dedicated to developing new acceptor systems beyond fullerenes, and some successful systems such as rylene diimides have achieved PCEs up to ca. 11%.In 2015, our group pioneered a new class of electron acceptors, fused-ring electron acceptor (FREA), as represented by the star molecule ITIC. The chemical features of FREAs include: (1) a modular structure, consisting of an electron-donating core, electron-withdrawing end groups, π-bridges, and side chains, which benefits molecular tailoring; (2) facile synthesis, purification, and scalability. The physical features of FREAs include: (1) a broad modulation range of absorption and energy levels; (2) strong absorption, especially in the 700-1000 nm region; (3) high electron mobility. The device features of FREAs include: (1) low voltage loss; (2) high efficiency; (3) good stability. The FREAs boosted PCEs of the OSCs up to 18% and initiated the transformation from the fullerene to nonfullerene era of this field. FREAs can also be used in PSCs as interfacial layers, electron transport layers, or active layers, improving both efficiency and stability of the devices. Beyond photovoltaic applications, FREAs can also be used in photodetectors, field-effect transistors, two-photon absorption, photothermal therapy, solar water splitting, etc.In this Account, we review the development of the FREAs and their applications in OSCs, PSCs, and other related fields. Molecular design, device engineering, photophysics, and applications of FREAs are discussed in detail. Future research directions toward performance optimization and commercialization of FREAs are also proposed.
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Affiliation(s)
- Jiayu Wang
- Department of Materials Science and Engineering, College of Engineering, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Peking University, Beijing 100871, China
| | - Xiaowei Zhan
- Department of Materials Science and Engineering, College of Engineering, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Peking University, Beijing 100871, China
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Chang B, Cheng HW, Lin YC, Wang HC, Chen CH, Nguyen VT, Yang Y, Wei KH. Incorporating Indium Selenide Nanosheets into a Polymer/Small Molecule Binary Blend Active Layer Enhances the Long-Term Stability and Performance of Its Organic Photovoltaics. ACS APPLIED MATERIALS & INTERFACES 2020; 12:55023-55032. [PMID: 33238703 DOI: 10.1021/acsami.0c14461] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
In this report, we demonstrated that the incorporation of 15 wt % two-dimensional transition-metal dichalcogenide materials indium selenide (In2Se3) nanosheets into a polymer (PM6)/small molecule (Y6) active layer not only increased its light absorption but also enhanced the long-term stability of the PM6/Y6/In2Se3 ternary blend organic photovoltaic (OPV) devices. The power conversion efficiency (PCE) of the device was improved from 15.7 to 16.5% for the corresponding PM6/Y6 binary blend device. Moreover, the PM6/Y6/In2Se3 device retained 80% of its initial PCE after thermal treatment at 100 °C for 600 h; in comparison, the binary blend device retained only 62% of its initial value. This relative enhancement of 29% resulted from the In2Se3 nanosheets retarding or facilitating molecule packing in different orientations that stabilizes the morphology of the active layer. We adopted a modified kinetics model to account for the intrinsic degradation of the OPV; the degradation-facilitated energy for the degradation kinetics of the PCE for the ternary blend device was 5.3 kJ/mol, half of that (11.3 kJ/mol) of the binary blend device, indicating a slower degradation rate occurring for the case of incorporating In2Se3 nanosheets. Therefore, the incorporation of transition metal dichalcogenide nanosheets having tunable band gaps and large asymmetric shape appears to be a new way to improve the long-term stability of devices and realize the practical use of OPVs.
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Affiliation(s)
- Bin Chang
- Department of Materials Science and Engineering, National Chiao Tung University 30010 Hsinchu, Taiwan
| | - Hao-Wen Cheng
- Department of Materials Science and Engineering, National Chiao Tung University 30010 Hsinchu, Taiwan
| | - Yu-Che Lin
- Department of Materials Science and Engineering, National Chiao Tung University 30010 Hsinchu, Taiwan
| | - Hao-Cheng Wang
- Department of Materials Science and Engineering, National Chiao Tung University 30010 Hsinchu, Taiwan
| | - Chung-Hao Chen
- Department of Materials Science and Engineering, National Chiao Tung University 30010 Hsinchu, Taiwan
| | - Van-Truong Nguyen
- Department of Materials Science and Engineering, National Chiao Tung University 30010 Hsinchu, Taiwan
| | - Yang Yang
- Department of Material Science and Engineering, University of California, Los Angeles, California 90095, United States
| | - Kung-Hwa Wei
- Department of Materials Science and Engineering, National Chiao Tung University 30010 Hsinchu, Taiwan
- Center for Emergent Functional Matter Science, National Chiao Tung University, Hsinchu 30010, Taiwan
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Busireddy MR, Appalanaidu E, Bharath D, Chereddy NR, Shanigaram B, Sharma GD, Vaidya JR. Non‐fullerene all small molecule OBHJSCs with profound device characteristics. NANO SELECT 2020. [DOI: 10.1002/nano.202000175] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Affiliation(s)
- Manohar Reddy Busireddy
- Fluoro‐Agro Chemicals Division CSIR‐Indian Institute of Chemical Technology Hyderabad Telangana India
- Catalysis and Fine Chemicals Department CSIR‐Indian Institute of Chemical Technology Hyderabad Telangana India
- Academy of Scientific and Innovative Research CSIR‐Indian Institute of Chemical Technology Sector 19, Kamla Nehru Nagar Ghaziabad Uttar Pradesh 201002 India
| | - Ejjurothu Appalanaidu
- Fluoro‐Agro Chemicals Division CSIR‐Indian Institute of Chemical Technology Hyderabad Telangana India
- Academy of Scientific and Innovative Research CSIR‐Indian Institute of Chemical Technology Sector 19, Kamla Nehru Nagar Ghaziabad Uttar Pradesh 201002 India
| | - Dyaga Bharath
- Fluoro‐Agro Chemicals Division CSIR‐Indian Institute of Chemical Technology Hyderabad Telangana India
| | - Narendra Reddy Chereddy
- Fluoro‐Agro Chemicals Division CSIR‐Indian Institute of Chemical Technology Hyderabad Telangana India
- Academy of Scientific and Innovative Research CSIR‐Indian Institute of Chemical Technology Sector 19, Kamla Nehru Nagar Ghaziabad Uttar Pradesh 201002 India
| | - Balaiah Shanigaram
- Catalysis and Fine Chemicals Department CSIR‐Indian Institute of Chemical Technology Hyderabad Telangana India
| | - Ganesh Datt Sharma
- Department of Physics The LNM Institute of Information Technology, Jamdoli Jaipur Rajasthan India
| | - Jayathirtha Rao Vaidya
- Fluoro‐Agro Chemicals Division CSIR‐Indian Institute of Chemical Technology Hyderabad Telangana India
- Academy of Scientific and Innovative Research CSIR‐Indian Institute of Chemical Technology Sector 19, Kamla Nehru Nagar Ghaziabad Uttar Pradesh 201002 India
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Lee EJ, Song HJ. Donor-Acceptor Polymer Based on Planar Structure of Alkylidene-Fluorene Derivative: Correlation of Power Conversion Efficiency among Polymer and Various Acceptor Units. Polymers (Basel) 2020; 12:polym12122859. [PMID: 33260486 PMCID: PMC7760284 DOI: 10.3390/polym12122859] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 11/26/2020] [Accepted: 11/27/2020] [Indexed: 11/16/2022] Open
Abstract
This study synthesized a novel polymer, poly(alkylidene fluorene-alt-diphenylquinoxaline) (PAFDQ), based on a planar alkylidene-fluorene and a highly soluble quinoxaline derivative through the Suzuki coupling reaction. We designed a novel molecular structure based on alkylidene fluorene and quinoxaline derivatives due to compact packing property by the planar structure of alkyidene fluorene and efficient intra-molecular charge transfer by quinoxaline derivatives. The polymer was largely dissolved in organic solvents, with a number average molecular weight and polydispersity index of 13.2 kg/mol and 2.74, respectively. PAFDQ showed higher thermal stability compared with the general fluorene structure owing to its rigid alkylidene-fluorene structure. The highest occupied and lowest unoccupied molecular orbital levels of PAFDQ were −5.37 eV and −3.42 eV, respectively. According to X-ray diffraction measurements, PAFDQ exhibited the formation of an ordered lamellar structure and conventional edge-on π-stacking. The device based on PAFDQ/Y6-BO-4Cl showed the best performance in terms of short circuit current (9.86 mA/cm2), open-circuit voltage (0.76 V), fill factor (44.23%), and power conversion efficiency (3.32%). Moreover, in the PAFDQ/Y6-BO-4Cl-based film, the phase separation of donor-rich and acceptor-rich phases, and the connected dark domains, was observed.
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Affiliation(s)
- Eui Jin Lee
- Department of Materials Chemistry and Engineering, Konkuk University, 1 Hwayang-dong, Gwangjin-gu, Seoul 143-701, Korea;
| | - Ho Jun Song
- Research Institute of Sustainable Manufacturing System, Intelligent Sustainable Materials R&D Group, Korea Institute of Industrial Technology, 89 Yangdaegiro-gil, Ipjang-myeon, Seobuk-gu, Cheonan-si 331-822, Chungcheongnam-do, Korea
- Correspondence: ; Tel.: +82-41-589-8467
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Kim J, Koh CW, Uddin MA, Ryu KY, Jang SR, Woo HY, Lim B, Kim K. Improving the Photostability of Small-Molecule-Based Organic Photovoltaics by Providing a Charge Percolation Pathway of Crystalline Conjugated Polymer. Polymers (Basel) 2020; 12:polym12112598. [PMID: 33167422 PMCID: PMC7694356 DOI: 10.3390/polym12112598] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2020] [Revised: 10/27/2020] [Accepted: 11/01/2020] [Indexed: 12/13/2022] Open
Abstract
Photostability of small-molecule (SM)-based organic photovoltaics (SM-OPVs) is greatly improved by utilizing a ternary photo-active layer incorporating a small amount of a conjugated polymer (CP). Semi-crystalline poly[(2,5-bis(2-hexyldecyloxy)phenylene)-alt-(5,6-difluoro-4,7-di(thiophen-2-yl)benzo[c][1,2,5]thiadiazole)] (PPDT2FBT) and amorphous poly[(2,5-bis(2-decyltetradecyloxy)phenylene)-alt-(5,6-dicyano-4,7-di(thiophen-2-yl)benzo[c][1,2,5]thiadiazole)] (PPDT2CNBT) with similar chemical structures were used for preparing SM:fullerene:CP ternary photo-active layers. The power conversion efficiency (PCE) of the ternary device with PPDT2FBT (Ternary-F) was higher than those of the ternary device with PPDT2CNBT (Ternary-CN) and a binary SM-OPV device (Binary) by 15% and 17%, respectively. The photostability of the SM-OPV was considerably improved by the addition of the crystalline CP, PPDT2FBT. Ternary-F retained 76% of its initial PCE after 1500 h of light soaking, whereas Ternary-CN and Binary retained only 38% and 17% of their initial PCEs, respectively. The electrical and morphological analyses of the SM-OPV devices revealed that the addition of the semi-crystalline CP led to the formation of percolation pathways for charge transport without disturbing the optimized bulk heterojunction morphology. The CP also suppressed trap-assisted recombination and enhanced the hole mobility in Ternary-F. The percolation pathways enabled the hole mobility of Ternary-F to remain constant during the light-soaking test. The photostability of Ternary-CN did not improve because the addition of the amorphous CP inhibited the formation of ordered SM domains.
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Affiliation(s)
- Jihee Kim
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul 03760, Korea; (J.K.); (K.Y.R.)
| | - Chang Woo Koh
- Department of Chemistry, Korea University, Seoul 136713, Korea; (C.W.K.); (M.A.U.)
| | - Mohammad Afsar Uddin
- Department of Chemistry, Korea University, Seoul 136713, Korea; (C.W.K.); (M.A.U.)
| | - Ka Yeon Ryu
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul 03760, Korea; (J.K.); (K.Y.R.)
| | - Song-Rim Jang
- Future Technology Research Center, LG Sciencepark, LG Chem, 30, Magokjungang 10-ro, Gangseo-gu, Seoul 07796, Korea;
| | - Han Young Woo
- Department of Chemistry, Korea University, Seoul 136713, Korea; (C.W.K.); (M.A.U.)
- Correspondence: (H.Y.W.); (B.L.); (K.K.)
| | - Bogyu Lim
- Future Technology Research Center, LG Sciencepark, LG Chem, 30, Magokjungang 10-ro, Gangseo-gu, Seoul 07796, Korea;
- Green Fine Chemical Research Center, Advanced Convergent Chemistry Division, Korea Research Institute of Chemical Technology (KRICT), 45 Jongga-ro, Jung-gu, Ulsan 44412, Korea
- Correspondence: (H.Y.W.); (B.L.); (K.K.)
| | - Kyungkon Kim
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul 03760, Korea; (J.K.); (K.Y.R.)
- Correspondence: (H.Y.W.); (B.L.); (K.K.)
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