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Paci B, Righi Riva F, Generosi A, Guaragno M, Mangiacapre E, Brutti S, Wagner M, Distler A, Egelhaaf HJ. Semitransparent Organic Photovoltaic Devices: Interface/Bulk Properties and Stability Issues. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:269. [PMID: 38334540 PMCID: PMC10857079 DOI: 10.3390/nano14030269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Revised: 01/19/2024] [Accepted: 01/22/2024] [Indexed: 02/10/2024]
Abstract
In the present work, an insight on the morpho/structural properties of semitransparent organic devices for buildings' integrated photovoltaics is presented, and issues related to interface and bulk stability are addressed. The organic photovoltaic (OPV) cells under investigation are characterized by a blend of PM6:Y6 as a photo-active layer, a ZnO ETL (electron transporting layer), a HTL (hole transporting layer) of HTL-X and a transparent electrode composed by Ag nanowires (AgNWs). The devices' active nanomaterials, processed as thin films, and their mutual nanoscale interfaces are investigated by a combination of in situ Energy Dispersive X-ray Reflectometry (EDXR) and ex situ Atomic Force Microscopy (AFM), X-ray Diffraction (XRD) and micro-Raman spectroscopy. In order to discriminate among diverse concomitant aging pathways potentially occurring upon working conditions, the effects of different stress factors were investigated: light and temperature. Evidence is gained of an essential structural stability, although an increased roughness at the ZnO/PM6:Y6 interface is deduced by EDXR measurements. On the contrary, an overall stability of the system subjected to thermal stress in the dark was observed, which is a clear indication of the photo-induced origin of the observed degradation phenomenon. Micro-Raman spectroscopy brings light on the origin of such effect, evidencing a photo-oxidation process of the active material in the device, using hygroscopic organic HTL, during continuous illumination in ambient moisture conditions. The process may be also triggered by a photocatalytic role of the ZnO layer. Therefore, an alternative configuration is proposed, where the hygroscopic HTL-X is replaced by the inorganic compound MoOx. The results show that such alternative configuration is stable under light stress (solar simulator), suggesting that the use of Molybdenum Oxide, limiting the photo-oxidation of the bulk PM6:Y6 active material, can prevent the cell from degradation.
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Affiliation(s)
- Barbara Paci
- SpecX-Lab, Istituto di Struttura della Materia CNR, Via del Fosso del Cavaliere 100, 00133 Roma, Italy
| | - Flavia Righi Riva
- SpecX-Lab, Istituto di Struttura della Materia CNR, Via del Fosso del Cavaliere 100, 00133 Roma, Italy
| | - Amanda Generosi
- SpecX-Lab, Istituto di Struttura della Materia CNR, Via del Fosso del Cavaliere 100, 00133 Roma, Italy
| | - Marco Guaragno
- SpecX-Lab, Istituto di Struttura della Materia CNR, Via del Fosso del Cavaliere 100, 00133 Roma, Italy
| | - Emanuela Mangiacapre
- Dipartimento di Chimica, Università di Roma La Sapienza, P. Le Aldo Moro 2, 00185 Roma, Italy
| | - Sergio Brutti
- Dipartimento di Chimica, Università di Roma La Sapienza, P. Le Aldo Moro 2, 00185 Roma, Italy
| | - Michael Wagner
- Helmholtz-Institute Erlangen-Nürnberg (HI-ERN), Forschungszentrum Jülich GmbH (FZJ), Immerwahrstraße 2, 91058 Erlangen, Germany
- Institute Materials for Electronics and Energy Technology (i-MEET), Department of Material Science, Faculty of Engineering, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Martensstraße 7, 91058 Erlangen, Germany
| | - Andreas Distler
- Institute Materials for Electronics and Energy Technology (i-MEET), Department of Material Science, Faculty of Engineering, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Martensstraße 7, 91058 Erlangen, Germany
| | - Hans-Joachim Egelhaaf
- Helmholtz-Institute Erlangen-Nürnberg (HI-ERN), Forschungszentrum Jülich GmbH (FZJ), Immerwahrstraße 2, 91058 Erlangen, Germany
- Institute Materials for Electronics and Energy Technology (i-MEET), Department of Material Science, Faculty of Engineering, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Martensstraße 7, 91058 Erlangen, Germany
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Zhou Z, Xu Y, Yang J, Zhang S, Jin S, Li H, Zhu W, Liu Y. New Medium-Bandgap Nonfused Ring Guest Acceptor with a Higher-Lying LUMO Level Enables High-Performance Ternary Organic Solar Cells. ACS APPLIED MATERIALS & INTERFACES 2023; 15:42792-42801. [PMID: 37650699 DOI: 10.1021/acsami.3c06529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
Adding another constituent into a binary system, known as a ternary strategy, represents a simple and effective approach to boosting the power conversion efficiency (PCE) of organic solar cells (OSCs). Herein, we have prepared a new nonfused ring small-molecule acceptor with a medium bandgap, named DFTQA-2FIC, which possesses a high-lying lowest unoccupied molecular orbital energy level and a strong intramolecular charge-transfer effect. We elaborately utilized it as a third component in a typical PM6:Y6 blend to obtain high-performance ternary OSCs. The resulting ternary blend film exhibited superior and balanced hole/electron mobility, enhanced favorable aggregation morphology, and reduced charge carrier recombination. Consequently, an optimized ternary OSC presented a distinctly increased PCE of 17.29%, accompanied by synchronous enhancements in crucial parameters, representing a 7.46% improvement over the binary OSC based on PM6:Y6 with a PCE of 16.09%. This study highlights that incorporating DFTQA-2FIC as a third component in a binary system is suitable for optimizing photovoltaic performance.
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Affiliation(s)
- Zhongxin Zhou
- School of Materials Science and Engineering, Jiangsu Engineering Laboratory of Light-Electricity-Heat Energy-Converting Materials and Applications, Changzhou University, Changzhou 213164, China
| | - Yongchuan Xu
- School of Materials Science and Engineering, Jiangsu Engineering Laboratory of Light-Electricity-Heat Energy-Converting Materials and Applications, Changzhou University, Changzhou 213164, China
| | - Jun Yang
- School of Materials Science and Engineering, Jiangsu Engineering Laboratory of Light-Electricity-Heat Energy-Converting Materials and Applications, Changzhou University, Changzhou 213164, China
| | - Shiyue Zhang
- School of Materials Science and Engineering, Jiangsu Engineering Laboratory of Light-Electricity-Heat Energy-Converting Materials and Applications, Changzhou University, Changzhou 213164, China
| | - Shujing Jin
- School of Materials Science and Engineering, Jiangsu Engineering Laboratory of Light-Electricity-Heat Energy-Converting Materials and Applications, Changzhou University, Changzhou 213164, China
| | - Hongxiang Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - WeiGuo Zhu
- School of Materials Science and Engineering, Jiangsu Engineering Laboratory of Light-Electricity-Heat Energy-Converting Materials and Applications, Changzhou University, Changzhou 213164, China
| | - Yu Liu
- School of Materials Science and Engineering, Jiangsu Engineering Laboratory of Light-Electricity-Heat Energy-Converting Materials and Applications, Changzhou University, Changzhou 213164, China
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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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Liu Y, Liu B, Ma CQ, Huang F, Feng G, Chen H, Hou J, Yan L, Wei Q, Luo Q, Bao Q, Ma W, Liu W, Li W, Wan X, Hu X, Han Y, Li Y, Zhou Y, Zou Y, Chen Y, Liu Y, Meng L, Li Y, Chen Y, Tang Z, Hu Z, Zhang ZG, Bo Z. Recent progress in organic solar cells (Part II device engineering). Sci China Chem 2022. [DOI: 10.1007/s11426-022-1256-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Zhang Y, Wang Y, Shan T, Wei Q, Xu YX, Zhong H. Non-Fullerene Acceptors with an Optical Response over 1000 nm toward Efficient Organic Solar Cells. ACS APPLIED MATERIALS & INTERFACES 2021; 13:51279-51288. [PMID: 34672513 DOI: 10.1021/acsami.1c13404] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Non-fullerene acceptors (NFAs) with near-infrared (NIR) absorption show promising advantages in organic solar cells (OSCs). However, only a few NFAs can extend the absorption spectra over 1000 nm, and their photovoltaic performance has been unsatisfactory so far. To address this issue, three new NFAs, namely, 6-IFIC, 6-IF2F, and 6-IF4F, were synthesized by simultaneously introducing π-bridge units and different end groups. The π-bridge unit enlarges the conjugation and planarizes the molecular geometry, leading to intense absorption in the NIR range. The asymmetric configuration provides a large dipole moment, enhances the intermolecular interaction, and tunes the miscibility, consequently being beneficial for achieving a favorable morphology in OSCs. When blended with a donor polymer PTB7-Th, the 6-IF2F-based OSC yields the best power conversion efficiency (PCE) of 11.20%, which is among the highest PCEs based on NFAs with absorption over 1000 nm. More importantly, the absorption of the blend film provides a transparency window in the visible range from 400 and 650 nm. Therefore, the semitransparent OSCs based on these three NFAs can achieve over 28% average visible transmittance.
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Affiliation(s)
- Yi Zhang
- School of Chemistry and Chemical Engineering, Shanghai Key Lab of Electrical Insulation and Thermal Aging, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Yan Wang
- School of Chemistry and Chemical Engineering, Shanghai Key Lab of Electrical Insulation and Thermal Aging, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Tong Shan
- School of Chemistry and Chemical Engineering, Shanghai Key Lab of Electrical Insulation and Thermal Aging, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Qingyun Wei
- School of Chemistry and Chemical Engineering, Shanghai Key Lab of Electrical Insulation and Thermal Aging, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Yun Xiang Xu
- College of Polymer Science & Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Hongliang Zhong
- School of Chemistry and Chemical Engineering, Shanghai Key Lab of Electrical Insulation and Thermal Aging, Shanghai Jiao Tong University, Shanghai 200240, China
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Qiu D, Adil MA, Lu K, Wei Z. The Crystallinity Control of Polymer Donor Materials for High-Performance Organic Solar Cells. Front Chem 2020; 8:603134. [PMID: 33330397 PMCID: PMC7732501 DOI: 10.3389/fchem.2020.603134] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2020] [Accepted: 10/12/2020] [Indexed: 11/13/2022] Open
Abstract
Bulk heterojunction (BHJ) organic solar cells (OSCs) can be regarded as one of the most promising energy generation technologies for large-scale applications. Despite their several well-known drawbacks, the devices where polymers are employed as the donor are still leading the OSC universe in terms of performance. Such performance generally depends upon various critical factors such as the crystallinity of the material, the crystallization process during the film formation, and also the final film morphology. Despite a few reviews on the structure of the polymer donor materials and device performance, not enough attention has been paid toward the crystallinity problem. Herein, the structure and crystallinity of the representative polymer donor materials and the corresponding device properties have been briefly reviewed. Furthermore, several typical methods for controlling the crystallinity of materials have been summarized and illustrated as well. Moreover, the obstacles lying in the way of successful commercialization of such polymer solar cells have been systematically discussed. The in-depth interpretation of the crystallinity of the polymer donors in this article may stimulate novel ideas in material design and device fabrication.
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Affiliation(s)
- Dingding Qiu
- Chinese Academy of Sciences Key Laboratory of Nanosystem and Hierarchical Fabrication, Chinese Academy of Sciences Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, China
- University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, China
| | - Muhammad Abdullah Adil
- Chinese Academy of Sciences Key Laboratory of Nanosystem and Hierarchical Fabrication, Chinese Academy of Sciences Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, China
- University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, China
| | - Kun Lu
- Chinese Academy of Sciences Key Laboratory of Nanosystem and Hierarchical Fabrication, Chinese Academy of Sciences Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, China
- University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, China
| | - Zhixiang Wei
- Chinese Academy of Sciences Key Laboratory of Nanosystem and Hierarchical Fabrication, Chinese Academy of Sciences Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, China
- University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, China
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Jiang BH, Lee HE, Lu JH, Tsai TH, Shieh TS, Jeng RJ, Chen CP. High-Performance Semitransparent Organic Photovoltaics Featuring a Surface Phase-Matched Transmission-Enhancing Ag/ITO Electrode. ACS APPLIED MATERIALS & INTERFACES 2020; 12:39496-39504. [PMID: 32805877 DOI: 10.1021/acsami.0c10906] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
In this study, we designed a surface phase-matched transmission enhancement top electrode-Ag/indium tin oxide (ITO) structure for highly efficient and aesthetic semitransparent organic photovoltaics (ST-OPVs). The purposed highly transparent back electrodes (Ag/ITO) could selectively decrease visible reflection and increase transparency accordingly. By altering the thicknesses of the Ag and ITO layers, we could control the transmittance curve and increase the transparency of the ST-OPV devices. Devices based on PTB7-Th:IEICO-4F and PM6:Y6:PC71BM displayed outstanding performance (8.1 and 10.2%, respectively) with high photopic-weighted visible light transmittance (36.2 and 28.6%, respectively). The outstanding visible and near-infrared light harvesting of PM6:Y6:PC71BM further allowed a new application: double-sided energy harvesting from solar and indoor illumination. The simple optical design of a top electrode displaying high transparency/conductivity has a wide range of potential applications in, for example, greenhouse photovoltaics, tandem cells, and portable devices.
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Affiliation(s)
- Bing-Huang Jiang
- Department of Materials Engineering, Ming Chi University of Technology, New Taipei City 243, Taiwan
- Institute of Polymer Science and Engineering, National Taiwan University, Taipei 106, Taiwan
- Advanced Research Center for Green Materials Science and Technology, National Taiwan University, Taipei 106, Taiwan
| | - He-En Lee
- Department of Materials Engineering, Ming Chi University of Technology, New Taipei City 243, Taiwan
| | - Jong-Hong Lu
- Department of Materials Engineering, Ming Chi University of Technology, New Taipei City 243, Taiwan
| | - Tsung-Han Tsai
- Department of Materials Engineering, Ming Chi University of Technology, New Taipei City 243, Taiwan
| | - Tien-Shou Shieh
- Material and Chemical Research Laboratories, Industrial Technology Research Institute, Hsinchu 310, Taiwan
| | - Ru-Jong Jeng
- Institute of Polymer Science and Engineering, National Taiwan University, Taipei 106, Taiwan
- Advanced Research Center for Green Materials Science and Technology, National Taiwan University, Taipei 106, Taiwan
| | - Chih-Ping Chen
- Department of Materials Engineering, Ming Chi University of Technology, New Taipei City 243, Taiwan
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Han YW, Jung CH, Lee HS, Jeon SJ, Moon DK. High-Performance Nonfullerene Organic Photovoltaics Applicable for Both Outdoor and Indoor Environments through Directional Photon Energy Transfer. ACS APPLIED MATERIALS & INTERFACES 2020; 12:38470-38482. [PMID: 32846491 DOI: 10.1021/acsami.0c09539] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
With the advent of the smart factory and the Internet of Things (IoT) sensors, organic photovoltaics (OPVs) gained attention because of their ability to provide indoor power generation as an off-grid power supply. To satisfy these applications, OPVs must be capable of power generation in both outdoor and indoor at the same time for developing environmentally independent devices. For high performances in indoor irradiation, a strategy that maximizes photon utilization is essential. In this study, graphene quantum dots (GQDs), which have unique emitting properties, are introduced into a ZnO layer for efficient photon utilization of nonfullerene-based OPVs under indoor irradiation. GQDs exhibit high absorption properties in the 350-550 nm region and strong emission properties in the visible region due to down-conversion from lattice vibration. Using these properties, GQDs provide directional photon energy transfer to the bulk-heterojunction (BHJ) layer because the optical properties overlap. Additionally, the GQD-doped ZnO layer enhances shunt resistance (RSh) and forms good interfacial contact with the BHJ layer that results in increased carrier dissociation and transportation. Consequently, the fabricated device based on P(Cl-Cl)(BDD = 0.2) and IT-4F introduces GQDs exhibiting a maximum power conversion efficiency (PCE) of 14.0% with a superior enhanced short circuit current density (JSC) and fill factor (FF). Furthermore, the fabricated device exhibited high PCEs of 19.6 and 17.2% under 1000 and 200 lux indoor irradiation of light emitting diode (LED) lamps, respectively.
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Affiliation(s)
- Yong Woon Han
- Nano and Information Materials Lab. (NIMs Lab.), Department of Chemical Engineering, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Chang Ho Jung
- Nano and Information Materials Lab. (NIMs Lab.), Department of Chemical Engineering, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Hyoung Seok Lee
- Nano and Information Materials Lab. (NIMs Lab.), Department of Chemical Engineering, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Sung Jae Jeon
- Nano and Information Materials Lab. (NIMs Lab.), Department of Chemical Engineering, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Doo Kyung Moon
- Nano and Information Materials Lab. (NIMs Lab.), Department of Chemical Engineering, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
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Zhao Q, Qu J, He F. Chlorination: An Effective Strategy for High-Performance Organic Solar Cells. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2020; 7:2000509. [PMID: 32714759 PMCID: PMC7375252 DOI: 10.1002/advs.202000509] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 05/04/2020] [Indexed: 05/26/2023]
Abstract
This work summarizes recent developments in polymer solar cells (PSCs) prepared by a chlorination strategy. The intrinsic property of chlorine atoms, the progress of chlorinated polymers and small molecules, and the synergistic effect of chlorination with other methods to elevate solar conversions are discussed. Halogenation of donor-acceptor (D-A) materials is an effective method to improve the performance of PSCs, which mainly affects the push-pull of electrons between donor and acceptor units due to their strong electron-withdrawing capabilities. Although chlorine is less electronegative than fluorine, it can form very strong noncovalent interactions, such as Cl···S and Cl···π interactions, because its empty 3d orbits can help to accept the electron pairs or π electrons. This synergistic effect of electronegativity together with the empty 3d orbits of chlorine atoms leads to increased intramolecular and intermolecular interactions and a much stronger capability to down-shift the molecular energy levels. This work is intended to support a better understanding of the chlorination strategy to modify the material properties, and thus improve the performance of solar devices. Eventually, it will provide the research community with a clearer pathway to choose proper substitution methods according to different situations for high and stable solar energy conversion.
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Affiliation(s)
- Qiaoqiao Zhao
- Shenzhen Grubbs Institute and Department of ChemistrySouthern University of Science and TechnologyShenzhen518055China
| | - Jianfei Qu
- Shenzhen Grubbs Institute and Department of ChemistrySouthern University of Science and TechnologyShenzhen518055China
| | - Feng He
- Shenzhen Grubbs Institute and Department of ChemistrySouthern University of Science and TechnologyShenzhen518055China
- Guangdong Provincial Key Laboratory of CatalysisSouthern University of Science and TechnologyShenzhen518055China
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Kini GP, Jeon SJ, Moon DK. Design Principles and Synergistic Effects of Chlorination on a Conjugated Backbone for Efficient Organic Photovoltaics: A Critical Review. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e1906175. [PMID: 32020712 DOI: 10.1002/adma.201906175] [Citation(s) in RCA: 60] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Revised: 12/27/2019] [Indexed: 05/20/2023]
Abstract
The pursuit of low-cost, flexible, and lightweight renewable power resources has led to outstanding advancements in organic solar cells (OSCs). Among the successful design principles developed for synthesizing efficient conjugated electron donor (ED) or acceptor (EA) units for OSCs, chlorination has recently emerged as a reliable approach, despite being neglected over the years. In fact, several recent studies have indicated that chlorination is more potent for large-scale production than the highly studied fluorination in several aspects, such as easy and low-cost synthesis of materials, lowering energy levels, easy tuning of molecular orientation, and morphology, thus realizing impressive power conversion efficiencies in OSCs up to 17%. Herein, an up-to-date summary of the current progress in photovoltaic results realized by incorporating a chlorinated ED or EA into OSCs is presented to recognize the benefits and drawbacks of this interesting substituent in photoactive materials. Furthermore, other aspects of chlorinated materials for application in all-small-molecule, semitransparent, tandem, ternary, single-component, and indoor OSCs are also presented. Consequently, a concise outlook is provided for future design and development of chlorinated ED or EA units, which will facilitate utilization of this approach to achieve the goal of low-cost and large-area OSCs.
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Affiliation(s)
- Gururaj P Kini
- Nano and Information Materials (NIMs) Laboratory, Department of Chemical Engineering, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul, 05029, Korea
| | - Sung Jae Jeon
- Nano and Information Materials (NIMs) Laboratory, Department of Chemical Engineering, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul, 05029, Korea
| | - Doo Kyung Moon
- Nano and Information Materials (NIMs) Laboratory, Department of Chemical Engineering, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul, 05029, Korea
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