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Ding X, Ding YF, Huang C, Li Y, Zhang M, Zhu C, Li Z. Non-Covalent Interaction Enhancement on Active/Interfacial Layers via Two-Dimensional Vermiculite Doping for Efficient Organic Solar Cells. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2311715. [PMID: 38396319 DOI: 10.1002/smll.202311715] [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: 01/31/2024] [Indexed: 02/25/2024]
Abstract
Interface modification plays an important role in improving the power conversion efficiency (PCE) of organic solar cells (OSCs). However, the low non-covalent interaction between the cathode interface layer (CIL) and nonfullerene acceptor (NFA) directly affects the charge collection of OSCs. Here, the non-covalent interaction between the CIL and NFA is enhanced by introducing the 2D vermiculite (VML) in the poly(9,9-bis(3'-(N,N-dimethyl)-Nethylammonium-propyl-2,7-fluorene)-alt-2,7-(9,9-dioctylfluorene)) dibromide (PFN-Br) interface layer to form an efficient electron transport channel. As a result, the electron extraction efficiency from the active layer to the CIL is increased, and the PCE of OSCs based on PBDB-T:ITIC is boosted from 10.87% to 12.89%. In addition, the strategy of CIL doping VML is proven to be universal in different CIL materials, for which the PCE is boosted from 10.21% to 11.57% for OSCs based on PDINN and from 9.82% to 11.27% for OSCs based on PNDIT-F3N. The results provide a viable option for designing efficient CIL for high-performance non-fullerene OSCs, which may promote the commercialization of OSCs.
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Affiliation(s)
- Xu Ding
- College of Mechanical Engineering, University of South China, Hengyang, 421001, P. R. China
| | - Yu-Feng Ding
- School of Mathematics and Physics, University of South China, Hengyang, 421001, P. R. China
| | - Chenhui Huang
- College of Mechanical Engineering, University of South China, Hengyang, 421001, P. R. China
| | - Yuehao Li
- College of Mechanical Engineering, University of South China, Hengyang, 421001, P. R. China
| | - Meng Zhang
- College of Mechanical Engineering, University of South China, Hengyang, 421001, P. R. China
| | - Chunguang Zhu
- School of Materials Science and Engineering, Sichuan University of Science & Engineering, Zigong, Sichuan, 643002, P. R. China
| | - Zhenye Li
- College of Mechanical Engineering, University of South China, Hengyang, 421001, P. R. China
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2
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Shi J, Sun K, Chen Z, Qiu Y, Liu H, Ma W, Liu Q, Ge Z. The Influence of Donor/Acceptor Interfaces on Organic Solar Cells Efficiency and Stability Revealed through Theoretical Calculations and Morphology Characterizations. Angew Chem Int Ed Engl 2024; 63:e202318360. [PMID: 38189578 DOI: 10.1002/anie.202318360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 01/05/2024] [Accepted: 01/08/2024] [Indexed: 01/09/2024]
Abstract
End-groups halogenation strategies, generally refers to fluorination and chlorination, have been confirmed as simple and efficient methods to regulate the photoelectric performance of non-fullerene acceptors (NFAs), but a controversy over which one is better has existed for a long time. Here, two novel NFAs, C9N3-4F and C9N3-4Cl, featured with different end-groups were successfully synthesized and blended with two renowned donors, D18 and PM6, featured with different electron-withdrawing units. Detailed theoretical calculations and morphology characterizations of the interface structures indicate NFAs based on different end-groups possess different binding energy and miscibility with donors, which shows an obvious influence on phase-separation morphology, charge transport behavior and device performance. After verified by other three pairs of reported NFAs, a universal conclusion obtained as the devices based on D18 with fluorination-end-groups-based NFAs and PM6 with chlorination-end-groups-based NFAs generally show excellent efficiencies, high fill factors and stability. Finally, the devices based on D18: C9N3-4F and PM6: C9N3-4Cl yield outstanding efficiency of 18.53 % and 18.00 %, respectively. Suitably selecting donor and regulating donor/acceptor interface can accurately present the photoelectric conversion ability of a novel NFAs, which points out the way for further molecular design and selection for high-performance and stable organic solar cells.
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Affiliation(s)
- Jingyu Shi
- Zhejiang Provincial Engineering Research Center of Energy Optoelectronic Materials and Devices, Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences, Zhejiang, 315201, P. R. China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Kexuan Sun
- Zhejiang Provincial Engineering Research Center of Energy Optoelectronic Materials and Devices, Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences, Zhejiang, 315201, P. R. China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Zhenyu Chen
- Zhejiang Provincial Engineering Research Center of Energy Optoelectronic Materials and Devices, Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences, Zhejiang, 315201, P. R. China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Yi Qiu
- Zhejiang Provincial Engineering Research Center of Energy Optoelectronic Materials and Devices, Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences, Zhejiang, 315201, P. R. China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Hui Liu
- Zhejiang Provincial Engineering Research Center of Energy Optoelectronic Materials and Devices, Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences, Zhejiang, 315201, P. R. China
| | - Wei Ma
- State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Quan Liu
- Zhejiang Provincial Engineering Research Center of Energy Optoelectronic Materials and Devices, Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences, Zhejiang, 315201, P. R. China
| | - Ziyi Ge
- Zhejiang Provincial Engineering Research Center of Energy Optoelectronic Materials and Devices, Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences, Zhejiang, 315201, P. R. China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
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Jing W, Xu X, Yu L, Peng Q. Structure Influence of Amine-Containing Additives on the Solution State and Out-of-Plane Conductivity of PEDOT:PSS for Efficient Organic Solar Cells. Macromol Rapid Commun 2023; 44:e2300400. [PMID: 37469203 DOI: 10.1002/marc.202300400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2023] [Revised: 07/16/2023] [Accepted: 07/17/2023] [Indexed: 07/21/2023]
Abstract
Additives are extensively explored for improving PEDOT:PSS performances mainly through the removal of excess PSS and as a secondary dopant. In this work, amine-containing additives are introduced to PEDOT:PSS solutions as processing additives where the interactions to the PSS are anticipated through electrostatic interactions. Such interactions affected solution property where the increased viscosity is found to significantly increase the out-of-plane conductivity of the PEDOT:PSS thin films. Organic solar cells adopting these additive-assisted processed PEDOT:PSS layers as hole transporting layers (HTL) showed the improved device performances that resulted from the reduced series resistance provided by the PEDOT:PSS HTL. A top power conversion efficiency of 18.28% is achieved with para-phenylenediamine (PPD) additive in the PEDOT:PSS HTL, which is 3.5% higher compared to devices with neat PEDOT:PSS thin film as the HTL.
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Affiliation(s)
- Wenwen Jing
- School of Chemical Engineering and State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, P. R. China
| | - Xiaopeng Xu
- School of Chemical Engineering and State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, P. R. China
| | - Liyang Yu
- School of Chemical Engineering and State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, P. R. China
| | - Qiang Peng
- School of Chemical Engineering and State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, P. R. China
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4
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Zhang Y, Wang Q, Hu F, Wang Y, Wu D, Wang R, Duhm S. Photoelectron Spectroscopy Reveals the Impact of Solvent Additives on Poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) Thin Film Formation. ACS PHYSICAL CHEMISTRY AU 2023; 3:311-319. [PMID: 37249934 PMCID: PMC10214517 DOI: 10.1021/acsphyschemau.2c00073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 02/01/2023] [Accepted: 02/02/2023] [Indexed: 05/31/2023]
Abstract
The conductive polymer poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) is used in a manifold of electronic applications, and controlling its conductivity is often the key to attain a superior device performance. To that end, solvent additives like Triton, ethylene glycol (EG), or dimethyl sulfoxide (DMSO) are regularly incorporated. In our comprehensive study, we prepare PEDOT:PSS thin films with seven different additive combinations and with thicknesses ranging from 6 to 300 nm on indium-tin-oxide (ITO) substrates. We utilize X-ray photoelectron spectroscopy (XPS) to access the PSS-to-PEDOT ratio and the PSS--to-PSSH ratio in the near-surface region and ultraviolet photoelectron spectroscopy (UPS) to get the work function (WF). In addition, the morphology and conductivity of these samples are obtained. We found that the WF of the prepared thin films for each combination becomes saturated at a thickness of around 50 nm and thinner films show a lower WF due to the inferior coverage on the ITO. Furthermore, the WF shows a better correlation with the PSS--to-PSSH ratio than the commonly used PSS-to-PEDOT ratio as PSS- can directly affect the surface dipole. By adding solvent additives, a dramatic increase in the conductivity is observed for all PEDOT:PSS films, especially when DMSO is involved. Moreover, adding the additive Triton (surfactant) helps to suppress the WF fluctuation for most films of each additive combination and contributes to weaken the surface dipole, eventually leading to a lower and thickness-independent WF.
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Affiliation(s)
- Yuan Zhang
- Institute
of Functional Nano & Soft Materials (FUNSOM), Joint International
Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, Suzhou 215123, People’s Republic of China
- Jiangsu
Key Laboratory of Advanced Negative Carbon Technologies, Soochow University, Suzhou 215123, People’s Republic of China
| | - Qi Wang
- Institute
of Functional Nano & Soft Materials (FUNSOM), Joint International
Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, Suzhou 215123, People’s Republic of China
- Jiangsu
Key Laboratory of Advanced Negative Carbon Technologies, Soochow University, Suzhou 215123, People’s Republic of China
| | - Fengyang Hu
- Institute
of Functional Nano & Soft Materials (FUNSOM), Joint International
Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, Suzhou 215123, People’s Republic of China
- Jiangsu
Key Laboratory of Advanced Negative Carbon Technologies, Soochow University, Suzhou 215123, People’s Republic of China
| | - Yuhao Wang
- Institute
of Functional Nano & Soft Materials (FUNSOM), Joint International
Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, Suzhou 215123, People’s Republic of China
- Jiangsu
Key Laboratory of Advanced Negative Carbon Technologies, Soochow University, Suzhou 215123, People’s Republic of China
| | - Di Wu
- Institute
of Functional Nano & Soft Materials (FUNSOM), Joint International
Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, Suzhou 215123, People’s Republic of China
- Jiangsu
Key Laboratory of Advanced Negative Carbon Technologies, Soochow University, Suzhou 215123, People’s Republic of China
| | - Rongbin Wang
- Institut
für Physik and IRIS Adlershof, Humboldt-Universität
zu Berlin, Brook-Taylor-Str. 6, 12489 Berlin, Germany
| | - Steffen Duhm
- Institute
of Functional Nano & Soft Materials (FUNSOM), Joint International
Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, Suzhou 215123, People’s Republic of China
- Jiangsu
Key Laboratory of Advanced Negative Carbon Technologies, Soochow University, Suzhou 215123, People’s Republic of China
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5
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Feng L, Chen S, Zhang K, Jing J, Zhou Z, Xue Q, Liu Z, Chen Y, Dong S, Huang F, Cao Y. Phosphotungstate-Based Anode Interfacial Material for Constructing High-Performance Polymer Solar Cells with a Fill Factor over 80. ACS APPLIED MATERIALS & INTERFACES 2023; 15:5566-5576. [PMID: 36659861 DOI: 10.1021/acsami.2c22130] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
In the field of organic solar cells (OSCs), the interfacial layer plays the role of enhancing carrier extraction/transportation, inhibiting their recombination, etc. In contrast to the wide variety of cathode interfacial materials with good modification ability, much less effort has been reported for anode interfacial materials. In this study, we report a polyoxometalate-based inorganic molecular cluster, zinc phosphotungstate (Zn3P2W24O80, denoted ZnPW), as an anode interfacial layer. Based on the PM6/EH-HD-4F/L8-BO-F ternary system, the device with ZnPW modification achieved a high power conversion efficiency (PCE) and a fill factor of up to 18.67 and 80.29%, respectively, which are higher than the counterpart device (PCE of 18.01%) with PEDOT/PSS as the anode interfacial layer. Detailed studies revealed that under the modification of ZnPW, the devices obtained promoted light absorption and suitable energy level matching between the active layer and the electrode, reduced contact resistance, and suppressed charge recombination. In addition, the ZnPW-modified devices had improved photostability and storage stability compared to PEDOT/PSS-modified devices. Our work shows that the polyoxometalate-based inorganic nanocluster ZnPW has great advantages in enhancing the device performance and stability of OSCs.
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Affiliation(s)
- Lingwei Feng
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou510640, P. R. China
| | - Shihao Chen
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou510640, P. R. China
| | - Kai Zhang
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou510640, P. R. China
| | - Jianhua Jing
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou510640, P. R. China
| | - Zhisheng Zhou
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou510640, P. R. China
| | - Qifan Xue
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou510640, P. R. China
| | - Zixian Liu
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou510640, P. R. China
| | - Yanwei Chen
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou510640, P. R. China
| | - Sheng Dong
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou510640, P. R. China
| | - Fei Huang
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou510640, P. R. China
| | - Yong Cao
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou510640, P. R. China
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6
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Shi S, Hou Y, Yang T, Huang C, Yao S, Zhao C, Liu Y, Zhang Z, Liu T, Zou B. Simple Solvent Treatment Enabled Improved PEDOT:PSS Performance toward Highly Efficient Binary Organic Solar Cells. ACS OMEGA 2022; 7:41789-41795. [PMID: 36406480 PMCID: PMC9670710 DOI: 10.1021/acsomega.2c06181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/24/2022] [Accepted: 10/26/2022] [Indexed: 06/16/2023]
Abstract
PSS is the most popular hole-transporting material (HTM) for conventional structural organic solar cell (OSC) devices, whose performance is of great importance for realizing high power conversion efficiency (PCE). However, its performance in OSC devices has been continuously challenged by various replacing materials and different doping strategies, for better conductivity, work function, and surface property. Here, we report a simple dopant-free method to tune the phase separation of the PEDOT:PSS layer, which results in better charge transport and extraction in devices. Specifically, high PCEs for binary polymer-small-molecule (>18%) and polymer-polymer (>17%) systems are simultaneously achieved. This work engineeringly provides encouraging improvement for OSC device performance with easy modification and scientifically offers insights into tuning the property of the PEDOT:PSS layer.
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Affiliation(s)
- Shasha Shi
- Julong
College, Shenzhen Technology University, Shenzhen 518118, China
- Guangxi
Key Lab of Processing for Nonferrous Metals and Featured Materials
and Key Lab of New Processing Technology for Nonferrous Metals and
Materials, Ministry of Education; School of Resources, Environments
and Materials, Guangxi University, Nanning 530004, China
| | - Yiwen Hou
- Julong
College, Shenzhen Technology University, Shenzhen 518118, China
| | - Tao Yang
- Julong
College, Shenzhen Technology University, Shenzhen 518118, China
| | - Ciyuan Huang
- Guangxi
Key Lab of Processing for Nonferrous Metals and Featured Materials
and Key Lab of New Processing Technology for Nonferrous Metals and
Materials, Ministry of Education; School of Resources, Environments
and Materials, Guangxi University, Nanning 530004, China
| | - Shangfei Yao
- Guangxi
Key Lab of Processing for Nonferrous Metals and Featured Materials
and Key Lab of New Processing Technology for Nonferrous Metals and
Materials, Ministry of Education; School of Resources, Environments
and Materials, Guangxi University, Nanning 530004, China
| | - Chenfu Zhao
- Guangxi
Key Lab of Processing for Nonferrous Metals and Featured Materials
and Key Lab of New Processing Technology for Nonferrous Metals and
Materials, Ministry of Education; School of Resources, Environments
and Materials, Guangxi University, Nanning 530004, China
| | - Yudie Liu
- Guangxi
Key Lab of Processing for Nonferrous Metals and Featured Materials
and Key Lab of New Processing Technology for Nonferrous Metals and
Materials, Ministry of Education; School of Resources, Environments
and Materials, Guangxi University, Nanning 530004, China
| | - Ziyang Zhang
- Guangxi
Key Lab of Processing for Nonferrous Metals and Featured Materials
and Key Lab of New Processing Technology for Nonferrous Metals and
Materials, Ministry of Education; School of Resources, Environments
and Materials, Guangxi University, Nanning 530004, China
| | - Tao Liu
- Guangxi
Key Lab of Processing for Nonferrous Metals and Featured Materials
and Key Lab of New Processing Technology for Nonferrous Metals and
Materials, Ministry of Education; School of Resources, Environments
and Materials, Guangxi University, Nanning 530004, China
| | - Bingsuo Zou
- Guangxi
Key Lab of Processing for Nonferrous Metals and Featured Materials
and Key Lab of New Processing Technology for Nonferrous Metals and
Materials, Ministry of Education; School of Resources, Environments
and Materials, Guangxi University, Nanning 530004, China
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