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Effect of Polymer Chain Regularity on the Photovoltaic Performance of Organic Solar Cells. CHINESE JOURNAL OF POLYMER SCIENCE 2022. [DOI: 10.1007/s10118-022-2796-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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2
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Molecular engineering of near-infrared active boron dipyrromethene moiety with various donors and acceptors for tuning the absorption behavior and electron injection of the resultant dyes. J Photochem Photobiol A Chem 2021. [DOI: 10.1016/j.jphotochem.2021.113161] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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3
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Liu F, Liu J, Wang L. Panchromatic Organoboron Molecules with Tunable Absorption Spectra. Chem Asian J 2020; 15:3314-3320. [PMID: 32798275 DOI: 10.1002/asia.202000958] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Indexed: 11/10/2022]
Abstract
Panchromatic molecules, e. g. organic small molecules with wide absorption spectra, are very desirable for solar energy-related applications. Here, we report the development of a series of organoboron compounds composed of an organoboron core unit, two π-bridging units and two electron-withdrawing end-capping units. All seven molecules have the HOMO localized on the core unit and the LUMO delocalized on the whole conjugated backbone. They exhibit wide absorption spectra consisting of two strong absorption bands with the full width at half maximum of ca. 280 nm. These panchromatic compounds can be used as electron acceptors in organic solar cells. We elucidate the relationship between the chemical structures and opto-electronic properties of these organoboron panchromatic compounds. Increasing the electron-withdrawing capability of the core units results in a downshifted HOMO level as well as blueshifted long-wavelength absorption band with increased extinction coefficient. Extending the π-bridging units causes an increased HOMO level and blueshifted long-wavelength absorption band with increased extinction coefficients. Weakening the electron-withdrawing capability of the end-capping units leads to an upshifted LUMO level and blueshifted long-wavelength absorption peak with decreased extinction coefficient. This work provides insight into the absorption spectrum manipulation of panchromatic molecules and would pave the way for the development of solar energy-related applications.
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Affiliation(s)
- Fangbin Liu
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China.,School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Changchun, 130022, P. R. China
| | - Jun Liu
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
| | - Lixiang Wang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
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Rao RS, Yadagiri B, Sharma GD, Singh SP. Butterfly architecture of NIR Aza-BODIPY small molecules decorated with phenothiazine or phenoxazine. Chem Commun (Camb) 2019; 55:12535-12538. [DOI: 10.1039/c9cc06300e] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This is the first report on the highest efficiency NIR absorbing Aza-Bodipy small molecules.
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Affiliation(s)
- Ravulakollu Srinivasa Rao
- Polymers and Functional Materials Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad-500007
- India
- Academy of Scientific and Innovative Research (AcSIR)
| | - B. Yadagiri
- Polymers and Functional Materials Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad-500007
- India
- Academy of Scientific and Innovative Research (AcSIR)
| | | | - Surya Prakash Singh
- Polymers and Functional Materials Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad-500007
- India
- Academy of Scientific and Innovative Research (AcSIR)
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5
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Li Y, Wang Z, Zhang C, Gu P, Chen W, Li H, Lu J, Zhang Q. Thiadizoloquinoxaline-Based N-Heteroacenes as Active Elements for High-Density Data-Storage Device. ACS APPLIED MATERIALS & INTERFACES 2018; 10:15971-15979. [PMID: 29682969 DOI: 10.1021/acsami.8b05178] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
A novel thiadiazoloquinoxaline (TQ)-based donor-acceptor (D-A)-type N-heteroacene (Py-1-TQ) has been demonstrated for promising applications in organic multilevel resistive memory devices. Compared with its counterparts (Py-0-TQ and Py-2-TQ), which show flash-type binary memory behaviors, Py-1-TQ exhibits excellent nonvolatile write-once-read-many-times-type ternary memory effects with high ON2/ON1/OFF current ratios (105.8:103.4:1), which can be attributed to the different electron-withdrawing abilities between the pyrazine unit and TQ species that can induce stepwise D-A charge-transfer processes. These results suggest that TQ-based N-heteroacenes can be potentially useful in ultrahigh-density data-storage devices through the rational D-A tuning.
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Affiliation(s)
- Yang Li
- College of Chemistry, Chemical Engineering and Materials Science , Soochow University , Suzhou 215123 , P. R. China
- School of Materials Science and Engineering , Nanyang Technological University , Singapore 639798 , Singapore
| | - Zilong Wang
- School of Materials Science and Engineering , Nanyang Technological University , Singapore 639798 , Singapore
| | - Cheng Zhang
- College of Chemistry, Chemical Engineering and Materials Science , Soochow University , Suzhou 215123 , P. R. China
| | - Peiyang Gu
- School of Materials Science and Engineering , Nanyang Technological University , Singapore 639798 , Singapore
| | - Wangqiao Chen
- School of Materials Science and Engineering , Nanyang Technological University , Singapore 639798 , Singapore
| | - Hua Li
- College of Chemistry, Chemical Engineering and Materials Science , Soochow University , Suzhou 215123 , P. R. China
| | - Jianmei Lu
- College of Chemistry, Chemical Engineering and Materials Science , Soochow University , Suzhou 215123 , P. R. China
| | - Qichun Zhang
- School of Materials Science and Engineering , Nanyang Technological University , Singapore 639798 , Singapore
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Aïssa B, Nedil M, Kroeger J, Ali A, Isaifan RJ, Essehli R, Mahmoud KA. Graphene nanoplatelet doping of P3HT:PCBM photoactive layer of bulk heterojunction organic solar cells for enhancing performance. NANOTECHNOLOGY 2018; 29:105405. [PMID: 29384727 DOI: 10.1088/1361-6528/aaa62d] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Hybrid organic photovoltaic (OPV) cells based on conjugated polymer photoactive materials are promising candidates for flexible, high-performance and low-cost energy sources owing to their inexpensive materials, cost-effective processing and ease of fabrication by simple solution processes. However, the modest PV performance obtained to date-in particular the low power conversion efficiency (PCE)-has impeded the large scale deployment of OPV cells. The low PCE in OPV solar cells is mainly attributed to the low carrier mobility, which is closely correlated to the transport diffusion length of the charge carriers within the photoactive layers. The 2D graphene material could be an excellent candidate for assisting charge transport improvement in the active layer of OPV cells, due to its huge carrier mobility, thermal and chemical stability, and its compatibility with the solution process. In this work, we report on the improvement of the optoelectronic properties and photovoltaic performance of graphene nanoplatelet (GNP)-doped P3HT:PCBM photoactive blended layers, integrated into a bulk heterojunction (BHJ) organic-photovoltaic-based device, using PEDOT:PSS on an ITO/glass substrate. First, the light absorption capacity was observed to increase with respect to the GNP content, while the photoluminescence showed clear quenching, indicating electron transfer between the graphene sheets and the polymeric matrix. Then, the incorporation of GNP into the BHJ active layer resulted in enhanced PV performance with respect to the reference cell, and the best PV performance was obtained with 3 wt.% of GNP loading, with an open-circuit voltage of 1.24 V, a short-circuit current density value of 6.18 mA cm-2, a fill factor of 47.12%, and a power conversion efficiency of about 3.61%. We believe that the obtained results contribute to the development of organic photovoltaic devices and to the understanding of the impact of sp2-bonded carbon therein.
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Affiliation(s)
- Brahim Aïssa
- MPB Technologies Inc., Department of Smart Materials and Sensors for Space Missions, 151 Hymus Boulv. Pointe Claire, Canada. Qatar Environment and Energy Research Institute, Hamad Bin Khalifa University, Qatar Foundation, PO Box 5825, Doha, Qatar. Division of Sustainable Development, Hamad Bin Khalifa University, Qatar Foundation, PO Box 5825, Doha, Qatar
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Singh AK, Krishnamoorthy K. Self-Assembled Spheres, Flowers, and Fibers from the Same Backbone and Similar Side Chains. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:13401-13406. [PMID: 29087204 DOI: 10.1021/acs.langmuir.7b02728] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Rylene imides (RIs) self-assemble into various nanostructures. Often, the synthesis of unsymmetrical RIs (URIs) is required to achieve nanostructures. However, the synthesis of URIs is nontrivial. Thus, a structurally similar alternative is desirable. iso-Indigo (i-indigo) has a π core and lactam rings that are structurally similar to the RIs. Unsymmetrical iso-indigo (i-indigo) can be easily synthesized by condensing oxindole and isatin. We have synthesized a series of unsymmetrical i-indigo molecules. In these molecules, the π-π interaction, hydrogen bonding, and van der Waals interactions are in operation. Because of these, the molecules self-assemble into spheres, fibers, and dahlia flower morphologies. If the hydrogen bonding interaction is disrupted, then all of them form fibers. Control experiments indicate that the complete absence of hydrogen bonding is deleterious to self-assembly. We also show that the lower analogs of i-indigo are not sufficient to form self-assembled nanostructures.
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Affiliation(s)
- Anup Kumar Singh
- CSIR-National Chemical Laboratory, CSIR-Networks of Institutes for Solar Energy , Dr Homi Bhabha Road, Pune 411008, India
| | - Kothandam Krishnamoorthy
- CSIR-National Chemical Laboratory, CSIR-Networks of Institutes for Solar Energy , Dr Homi Bhabha Road, Pune 411008, India
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Improved photovoltaic performance of D–A–D-type small molecules with isoindigo and pyrene units by inserting different π-conjugated bridge. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.06.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Li Y, Li H, He J, Xu Q, Li N, Chen D, Lu J. Inserting Thienyl Linkers into Conjugated Molecules for Efficient Multilevel Electronic Memory: A New Understanding of Charge-Trapping in Organic Materials. Chem Asian J 2016; 11:906-14. [DOI: 10.1002/asia.201501441] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2015] [Indexed: 11/11/2022]
Affiliation(s)
- Yang Li
- College of Chemistry; Chemical Engineering and Materials Science; Collaborative Innovation Center of Suzhou Nano Science and Technology; Soochow University; Suzhou 215123 P. R. China
| | - Hua Li
- College of Chemistry; Chemical Engineering and Materials Science; Collaborative Innovation Center of Suzhou Nano Science and Technology; Soochow University; Suzhou 215123 P. R. China
| | - Jinghui He
- College of Chemistry; Chemical Engineering and Materials Science; Collaborative Innovation Center of Suzhou Nano Science and Technology; Soochow University; Suzhou 215123 P. R. China
| | - Qingfeng Xu
- College of Chemistry; Chemical Engineering and Materials Science; Collaborative Innovation Center of Suzhou Nano Science and Technology; Soochow University; Suzhou 215123 P. R. China
| | - Najun Li
- College of Chemistry; Chemical Engineering and Materials Science; Collaborative Innovation Center of Suzhou Nano Science and Technology; Soochow University; Suzhou 215123 P. R. China
| | - Dongyun Chen
- College of Chemistry; Chemical Engineering and Materials Science; Collaborative Innovation Center of Suzhou Nano Science and Technology; Soochow University; Suzhou 215123 P. R. China
| | - Jianmei Lu
- College of Chemistry; Chemical Engineering and Materials Science; Collaborative Innovation Center of Suzhou Nano Science and Technology; Soochow University; Suzhou 215123 P. R. China
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Lee J, Ko H, Song E, Kim HG, Cho K. Naphthodithiophene-Based Conjugated Polymer with Linear, Planar Backbone Conformation and Strong Intermolecular Packing for Efficient Organic Solar Cells. ACS APPLIED MATERIALS & INTERFACES 2015; 7:21159-69. [PMID: 26360662 DOI: 10.1021/acsami.5b04884] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Two donor-acceptor copolymers, PBDT and PNDT, containing 4,8-bis(2-ethylhexyloxy)benzo[1,2-b:3,4-b']dithiophene (BDT) and 4,9-bis(2-ethylhexyloxy)naphtho[1,2-b:5,6-b']dithiophene (NDT), respectively, as an electron-rich unit and 5,6-difluoro-2,1,3-benzothiadiazole (2FBT) as an electron-deficient unit, were synthesized and compared. The introduction of the NDT core into the conjugated backbone was found to effectively improve both light harvesting and the charge carrier mobility by enhancing chain planarity and backbone linearity; the NDT copolymer has stronger noncovalent interactions and smaller bond angles than those of the BDT-based polymer. Moreover, the introduction of the NDT core brings about a drastic change in the molecular orientation into the face-on motif and results in polymer:PCBM blend films with well-mixed interpenetrating nanofibrillar bulk-heterojunction networks with small-scale phase separation, which produce solar cells with higher short-circuit current density and fill factor values. A conventional optimized device structure containing PNDT:PC71BM was found to exhibit a maximum solar efficiency of 6.35%, an open-circuit voltage of 0.84 V, a short-circuit current density of 11.92 mA cm(-2), and a fill factor of 63.5% with thermal annealing, which demonstrates that the NDT and DT2FBT moieties are a promising electron-donor/acceptor combination for high-performance photovoltaics.
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Affiliation(s)
- Jaewon Lee
- Department of Chemical Engineering, Pohang University of Science and Technology , Pohang, 790-784, Korea
| | - Hyomin Ko
- Department of Chemical Engineering, Pohang University of Science and Technology , Pohang, 790-784, Korea
| | - Eunjoo Song
- Department of Chemical Engineering, Pohang University of Science and Technology , Pohang, 790-784, Korea
| | - Heung Gyu Kim
- Department of Chemical Engineering, Pohang University of Science and Technology , Pohang, 790-784, Korea
| | - Kilwon Cho
- Department of Chemical Engineering, Pohang University of Science and Technology , Pohang, 790-784, Korea
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Wang X, Brisard G, Fortin D, Karsenti PL, Harvey PD. Push–Pull Porphyrin-Containing Polymers: Materials Exhibiting Ultrafast Near-IR Photophysics. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b01607] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Xiaorong Wang
- Departement
de chimie, Université de Sherbrooke, Sherbrooke, Quebec J1K 2R1, Canada
| | - Gessie Brisard
- Departement
de chimie, Université de Sherbrooke, Sherbrooke, Quebec J1K 2R1, Canada
| | - Daniel Fortin
- Departement
de chimie, Université de Sherbrooke, Sherbrooke, Quebec J1K 2R1, Canada
| | | | - Pierre D. Harvey
- Departement
de chimie, Université de Sherbrooke, Sherbrooke, Quebec J1K 2R1, Canada
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Tomassetti M, Ouhib F, Cardinaletti I, Verstappen P, Salleo A, Jérôme C, Manca J, Maes W, Detrembleur C. Branched and linear A2–D–A1–D–A2isoindigo-based solution-processable small molecules for organic field-effect transistors and solar cells. RSC Adv 2015. [DOI: 10.1039/c5ra17660c] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
A2–D–A1–D–A2type small molecules were synthesized, providing a solar cell efficiency of 1.9% and hole mobility of 3.7 × 10−3cm2V−1s−1.
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Affiliation(s)
- Mirco Tomassetti
- Center for Education and
- Research on Macromolecules (CERM)
- University of Liège (Ulg)
- Chemistry Department
- 40009 Liège
| | - Farid Ouhib
- Center for Education and
- Research on Macromolecules (CERM)
- University of Liège (Ulg)
- Chemistry Department
- 40009 Liège
| | | | - Pieter Verstappen
- Design & Synthesis of Organic Semiconductors (DSOS)
- Institute for Materials Research (IMO-IMOMEC)
- Hasselt University
- 3590 Diepenbeek
- Belgium
| | - Alberto Salleo
- Department of Materials Science and Engineering
- Stanford
- California 94305
- USA
| | - Christine Jérôme
- Center for Education and
- Research on Macromolecules (CERM)
- University of Liège (Ulg)
- Chemistry Department
- 40009 Liège
| | - Jean Manca
- X-Lab
- Hasselt University
- 3590 Diepenbeek
- Belgium
| | - Wouter Maes
- Design & Synthesis of Organic Semiconductors (DSOS)
- Institute for Materials Research (IMO-IMOMEC)
- Hasselt University
- 3590 Diepenbeek
- Belgium
| | - Christophe Detrembleur
- Center for Education and
- Research on Macromolecules (CERM)
- University of Liège (Ulg)
- Chemistry Department
- 40009 Liège
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Sahare S, Veldurthi N, Datar S, Bhave T. Photon assisted conducting atomic force microscopy study of nanostructured additives in P3HT:PCBM. RSC Adv 2015. [DOI: 10.1039/c5ra20266c] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
P3HT:PCBM demonstrates an enhanced current with additives (Ag NPs and Gr ). Continuous conducting paths attribute the Gr additives with an order of higher magnitude than the Ag NPs. The results are consistent and were studied using photon assisted conducting microscopy.
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Affiliation(s)
- Sanjay Sahare
- Department of Applied Physics
- Defence Institute of Advanced Technology
- Pune 411025
- India
| | - Naresh Veldurthi
- Department of Applied Physics
- Defence Institute of Advanced Technology
- Pune 411025
- India
| | - Suwarna Datar
- Department of Applied Physics
- Defence Institute of Advanced Technology
- Pune 411025
- India
| | - Tejashree Bhave
- Department of Applied Physics
- Defence Institute of Advanced Technology
- Pune 411025
- India
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Areephong J, San Juan RR, Payne AJ, Welch GC. A narrow band gap isoindigo based molecular donor for solution processed organic solar cells. NEW J CHEM 2015. [DOI: 10.1039/c5nj00436e] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Organic photovoltaics devices with 3.2% PCE were demonstrated using an isoindigo small molecule donor: fullerene acceptor active layer.
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Affiliation(s)
| | | | - Abby-Jo Payne
- Department of Chemistry
- Dalhouise University
- Halifax
- Canada B3H 4R2
| | - Gregory C. Welch
- Department of Chemistry
- Dalhouise University
- Halifax
- Canada B3H 4R2
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