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Li X, Li K, Su D, Shen F, Huo S, Fu H, Zhan C. Design a thieno[3,2-b]thiophene bridged nonfullerene acceptor to increase open-circuit voltage, short-circuit current-density and fill factor via the ternary strategy. CHINESE CHEM LETT 2020. [DOI: 10.1016/j.cclet.2019.10.029] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Mansbach RA, Ferguson AL. Patchy Particle Model of the Hierarchical Self-Assembly of π-Conjugated Optoelectronic Peptides. J Phys Chem B 2018; 122:10219-10236. [DOI: 10.1021/acs.jpcb.8b05781] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Rachael A. Mansbach
- Department of Physics, University of Illinois at Urbana−Champaign, 1110 West Green Street, Urbana, Illinois 61801, United States
| | - Andrew L. Ferguson
- Department of Physics, University of Illinois at Urbana−Champaign, 1110 West Green Street, Urbana, Illinois 61801, United States
- Department of Materials Science and Engineering, University of Illinois at Urbana−Champaign, 1304 W Green Street, Urbana, Illinois 61801, United States
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana−Champaign, 600 South Mathews Avenue, Urbana, Illinois 61801, United States
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Mishra R, Basumatary B, Singhal R, Sharma GD, Sankar J. Corrole-BODIPY Dyad as Small-Molecule Donor for Bulk Heterojunction Solar Cells. ACS APPLIED MATERIALS & INTERFACES 2018; 10:31462-31471. [PMID: 30136584 DOI: 10.1021/acsami.8b08519] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Dyes based on charge-transfer (CT) characteristics are attractive candidates for organic photovoltaics due to their intense and broad absorption window. In these molecular frameworks, electron-rich donors and electron-deficient acceptors are covalently linked to achieve an effective CT process. Corrole, a tetrapyrrolic congener of porphyrin, is an excellent example of an electron-rich molecule with a large molar extinction coefficient. BODIPY, on the other hand, is a well-known electron-deficient bypyrrolic boron difluoride complex with intense absorption complementary to the corrole. A combination of these two structural motifs should result in a dyad having a wide absorption window, which will be suitable for organic photovoltaics. Herein, a corrole derivative has been envisaged as an efficient donor for solution-processed bulk heterojunction solar cells with PC71BM as an acceptor for the first time. The current molecule exhibits broad absorption in the visible range in solution as well as in thin films, with a high molar extinction coefficient and a low band gap of 1.79 eV. Frontier molecular orbital energy levels were found to be complementary to those of the well-known acceptor PC71BM. The optimized devices based on Cor-BODIPY:PC71BM showed a high power conversion efficiency (PCE) of 6.6% with Jsc = 11.46 mA/cm2, Voc = 0.90 V, and FF = 0.61. A remarkable value of incident photon-to-current conversion efficiency (IPCE) of 61% has also been observed.
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Affiliation(s)
- Ruchika Mishra
- Department of Chemistry , Indian Institute of Science Education and Research (IISER) Bhopal , Bhopal Bypass Road , Bhauri, Bhopal 462066 , Madhya Pradesh , India
| | - Biju Basumatary
- Department of Chemistry , Indian Institute of Science Education and Research (IISER) Bhopal , Bhopal Bypass Road , Bhauri, Bhopal 462066 , Madhya Pradesh , India
| | - Rahul Singhal
- Department of Physics , Malviya National Institute of Technology , Jaipur 302017 , Rajasthan , India
| | - Ganesh D Sharma
- Department of Physics , The LNM Institute of Information Technology (A Deemed University) , Jamdoli, Jaipur 302031 , Rajasthan , India
| | - Jeyaraman Sankar
- Department of Chemistry , Indian Institute of Science Education and Research (IISER) Bhopal , Bhopal Bypass Road , Bhauri, Bhopal 462066 , Madhya Pradesh , India
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Fernandez D, Viterisi A, Challuri V, Ryan JW, Martinez-Ferrero E, Gispert-Guirado F, Martinez M, Escudero E, Stenta C, Marsal LF, Palomares E. Understanding the Limiting Factors of Solvent-Annealed Small-Molecule Bulk-Heterojunction Organic Solar Cells from a Chemical Perspective. CHEMSUSCHEM 2017; 10:3118-3134. [PMID: 28544632 DOI: 10.1002/cssc.201700440] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2017] [Revised: 05/19/2017] [Indexed: 06/07/2023]
Abstract
A detailed account of the limiting factors of solvent-annealed bulk-heterojunction small-molecule organic solar cells is given. This account is based on the extensive characterisation of solar cell devices made from a library of five diketopyrolopyrole (DPP) donor dyes. Their chemical structure is designed in such a way as to provide insights into the energetics of solar cell active layer micro-structure formation. Numerous chemical and physical properties of the active layers are assessed and inter-related such as light absorption, molecular packing in the solid state, crystal-forming properties in thin films, charge carrier mobility and charge carrier recombination kinetics. A myriad of characterisation techniques are used such as UV/Vis absorption spectroscopy, photoluminescence spectroscopy, XRD, AFM and photo-induced transient measurements, which provide information on the optical properties of the active layers, morphology and recombination kinetics. Consequently, a mechanism for the solvent-vapour-annealing-assisted formation of crystalline domains of donor molecules in the active layer is proposed, and the micro-structural features are related to the J-V characteristics of the devices. According to this model, the crystalline phase in which the donor crystallise in the active layer is the key determinant to direct the formation of the micro-structure.
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Affiliation(s)
- Daniel Fernandez
- Institute of Chemical Research of Catalonia (ICIQ), Av. Països Catalans, 16, 43007, Tarragona, Spain
| | - Aurelien Viterisi
- Departament d'Enginyeria Electrònica, Elèctrica i Automàtica, Universitat Rovira i Virgili, Avda. Països Catalans 26, 43007, Tarragona, Spain
| | - Vijay Challuri
- Institute of Chemical Research of Catalonia (ICIQ), Av. Països Catalans, 16, 43007, Tarragona, Spain
| | - James W Ryan
- International Center for Young Scientists (ICYS), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
| | | | - Francesc Gispert-Guirado
- Scientific Resources Service, Universitat Rovira I Virgili, Avda. Països Catalans 26, 43007, Tarragona, Spain
| | - Marta Martinez
- Institute of Chemical Research of Catalonia (ICIQ), Av. Països Catalans, 16, 43007, Tarragona, Spain
| | - Eduardo Escudero
- Institute of Chemical Research of Catalonia (ICIQ), Av. Països Catalans, 16, 43007, Tarragona, Spain
| | - Caterina Stenta
- Departament d'Enginyeria Electrònica, Elèctrica i Automàtica, Universitat Rovira i Virgili, Avda. Països Catalans 26, 43007, Tarragona, Spain
| | - Lluis F Marsal
- Departament d'Enginyeria Electrònica, Elèctrica i Automàtica, Universitat Rovira i Virgili, Avda. Països Catalans 26, 43007, Tarragona, Spain
| | - Emilio Palomares
- Institute of Chemical Research of Catalonia (ICIQ), Av. Països Catalans, 16, 43007, Tarragona, Spain
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