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Ramanujam R, Hsu HL, Shi ZE, Lung CY, Lee CH, Wubie GZ, Chen CP, Sun SS. Interfacial Layer Materials with a Truxene Core for Dopant-Free NiO x -Based Inverted Perovskite Solar Cells. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2310939. [PMID: 38453670 DOI: 10.1002/smll.202310939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 02/27/2024] [Indexed: 03/09/2024]
Abstract
Nickel oxide (NiOx ) is commonly used as a holetransporting material (HTM) in p-i-n perovskite solar cells. However, the weak chemical interaction between the NiOx and CH3 NH3 PbI3 (MAPbI3 ) interface results in poor crystallinity, ineffective hole extraction, and enhanced carrier recombination, which are the leading causes for the limited stability and power conversion efficiency (PCE). Herein, two HTMs, TRUX-D1 (N2 ,N7 ,N12 -tris(9,9-dimethyl-9H-fluoren-2-yl)-5,5,10,10,15,15-hexaheptyl-N2 ,N7 ,N12 -tris(4-methoxyphenyl)-10,15-dihydro-5H-diindeno[1,2-a:1',2'-c]fluorene-2,7,12-triamine) and TRUX-D2 (5,5,10,10,15,15-hexaheptyl-N2 ,N7 ,N12 -tris(4-methoxyphenyl)-N2 ,N7 ,N12 -tris(10-methyl-10H-phenothiazin-3-yl)-10,15-dihydro-5H-diindeno[1,2-a:1',2'-c]fluorene-2,7,12-triamine), are designed with a rigid planar C3 symmetry truxene core integrated with electron-donating amino groups at peripheral positions. The TRUX-D molecules are employed as effective interfacial layer (IFL) materials between the NiOx and MAPbI3 interface. The incorporation of truxene-based IFLs improves the quality of perovskite crystallinity, minimizes nonradiative recombination, and accelerates charge extraction which has been confirmed by various characterization techniques. As a result, the TRUX-D1 exhibits a maximum PCE of up to 20.8% with an impressive long-term stability. The unencapsulated device retains 98% of their initial performance following 210 days of aging in a glove box and 75.5% for the device after 80 days under ambient air condition with humidity over 40% at 25 °C.
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Affiliation(s)
- Rajarathinam Ramanujam
- Institute of Chemistry, Academia Sinica, Nankang, Taipei, 11529, Taiwan, ROC
- Taiwan International Graduate Program, Sustainable Chemical Science and Technology, Academia Sinica, Nankang, Taipei, 11529, Taiwan, ROC
- Department of Applied Chemistry, National Yang Ming Chiao Tung University, Hsinchu, 30050, Taiwan, ROC
| | - Hsiang-Lin Hsu
- Department of Materials Engineering, Ming Chi University of Technology, 84 Gunjuan Road, Taishan, New Taipei City, 24301, Taiwan, ROC
| | - Zhong-En Shi
- Department of Materials Engineering, Ming Chi University of Technology, 84 Gunjuan Road, Taishan, New Taipei City, 24301, Taiwan, ROC
| | - Chien-Yu Lung
- Department of Materials Engineering, Ming Chi University of Technology, 84 Gunjuan Road, Taishan, New Taipei City, 24301, Taiwan, ROC
| | - Chin-Han Lee
- Institute of Chemistry, Academia Sinica, Nankang, Taipei, 11529, Taiwan, ROC
| | | | - Chih-Ping Chen
- Department of Materials Engineering, Ming Chi University of Technology, 84 Gunjuan Road, Taishan, New Taipei City, 24301, Taiwan, ROC
- College of Engineering and Center for Sustainability and Energy Technologies, Chang Gung University, Taoyuan, 33302, Taiwan, ROC
| | - Shih-Sheng Sun
- Institute of Chemistry, Academia Sinica, Nankang, Taipei, 11529, Taiwan, ROC
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Xing Z, Li SH, An MW, Yang S. Beyond Planar Structure: Curved π-Conjugated Molecules for High-Performing and Stable Perovskite Solar Cells. CHEMSUSCHEM 2024; 17:e202301662. [PMID: 38169145 DOI: 10.1002/cssc.202301662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 12/22/2023] [Accepted: 01/02/2024] [Indexed: 01/05/2024]
Abstract
Perovskite solar cell (PSC) shows a great potential to become the next-generation photovoltaic technology, which has stimulated researchers to engineer materials and to innovate device architectures for promoting device performance and stability. As the power conversion efficiency (PCE) keeps advancing, the importance of exploring multifunctional materials for the PSCs has been increasingly recognized. Considerable attention has been directed to the design and synthesis of novel organic π-conjugated molecules, particularly the emerging curved ones, which can perform various unmatched functions for PSCs. In this review, the characteristics of three representative such curved π-conjugated molecules (fullerene, corannulene and helicene) and the recent progress concerning the application of these molecules in state-of-the-art PSCs are summarized and discussed holistically. With this discussion, we hope to provide a fresh perspective on the structure-property relation of these unique materials toward high-performance and high-stability PSCs.
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Affiliation(s)
- Zhou Xing
- Fujian Key Laboratory of Polymer Materials, Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, College of Chemistry & Materials Science, Fujian Normal University, 350007, Fuzhou, Fujian, China
| | - Shu-Hui Li
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, 541004, Guilin, Guangxi, China
| | - Ming-Wei An
- Strait Institute of Flexible Electronics (SIFE, Future Technologies), Fujian Normal University and Strait Laboratory of Flexible Electronics (SLoFE), 350007, Fuzhou, Fujian, China
| | - Shihe Yang
- Guangdong Provincial Key Lab of Nano-Micro Materials Research, School of Advanced Materials, Shenzhen Graduate School, Peking University, 518055, Shenzhen, Guangdong, China
- Institute of Biomedical Engineering, Shenzhen Bay Laboratory, 518055, Shenzhen, Guangdong, China
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Tejendra B, Rajput SS, Alam MM. A Curious Case of Two-Photon Absorption in n-Helicene and n-Phenylene, n=6-10: Why n=7 is Different? Chemphyschem 2024; 25:e202300710. [PMID: 37936568 DOI: 10.1002/cphc.202300710] [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: 09/28/2023] [Revised: 11/06/2023] [Accepted: 11/07/2023] [Indexed: 11/09/2023]
Abstract
n-Helicenes and n-Phenylenes are interesting examples of twisted molecules, where although the atoms are connected through conjugated π ${\pi }$ -bonds, the π ${\pi }$ -conjugation is largely hindered by the twisted nature of the bonds. Such structures provide a unique opportunity to study the effect of twisted π ${\pi }$ -system on non-linear optical properties. In this work, we studied the two-photon absorption in donor-acceptor substituted n-helicenes and n-phenylenes employing the state-of-the-art RI-CC2 method and reported a unique feature we observed in n=7 systems. We found that both 7-helicene and 7-phenylene systems exhibit largest two-photon absorption than other members in their respective classes. Furthermore, using generalized few-state model, we provided a detailed microscopic mechanism of this unique observation involving participation of different transition dipole moment vectors and their relative orientations.
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Affiliation(s)
- Banana Tejendra
- Department of Chemistry, Indian Institute of Technology Bhilai, Kutelabhata, Durg, Chhattisgarh 491001, India
| | - Swati Singh Rajput
- Department of Chemistry, Indian Institute of Technology Bhilai, Kutelabhata, Durg, Chhattisgarh 491001, India
| | - M Mehboob Alam
- Department of Chemistry, Indian Institute of Technology Bhilai, Kutelabhata, Durg, Chhattisgarh 491001, India
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Wei Y, Cai Y, He L, Zhang Y, Yuan Y, Zhang J, Wang P. Molecular engineering of nitrogen-rich helicene based organic semiconductors for stable perovskite solar cells. Chem Sci 2023; 14:10285-10296. [PMID: 37772097 PMCID: PMC10530664 DOI: 10.1039/d3sc02845c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2023] [Accepted: 09/04/2023] [Indexed: 09/30/2023] Open
Abstract
Polycyclic heteroaromatics play a pivotal role in advancing the field of high-performance organic semiconductors. In this study, we report the synthesis of a pyrrole-bridged double azahelicene through intramolecular oxidative cyclization. By incorporating bis(4-methoxyphenyl)amine (OMeDPA) and ethylenedioxythiophene-phenyl-OMeDPA (EP-OMeDPA) into the sp3-nitrogen rich double helicene framework, we have successfully constructed two organic semiconductors with ionization potentials suitable for application in perovskite solar cells. The amorphous films of both organic semiconductors exhibit hole density-dependent mobility and conductivity. Notably, the organic semiconductor utilizing EP-OMeDPA as the electron donor demonstrates superior hole mobility at a given hole density, which is attributed to reduced reorganization energy and increased centroid distance. Moreover, this organic semiconductor exhibits a remarkably elevated glass transition temperature of up to 230 °C and lower diffusivity for external small molecules and ions. When employed as the p-doped hole transport layer in perovskite solar cells, TMDAP-EP-OMeDPA achieves an improved average efficiency of 21.7%. Importantly, the solar cell with TMDAP-EP-OMeDPA also demonstrates enhanced long-term operational stability and storage stability at 85 °C. These findings provide valuable insights into the development of high-performance organic semiconductors, contributing to the practical application of perovskite solar cells.
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Affiliation(s)
- Yuefang Wei
- State Key Laboratory of Silicon and Advanced Semiconductor Materials, Department of Chemistry, Zhejiang University Hangzhou 310030 China
| | - Yaohang Cai
- State Key Laboratory of Silicon and Advanced Semiconductor Materials, Department of Chemistry, Zhejiang University Hangzhou 310030 China
| | - Lifei He
- State Key Laboratory of Silicon and Advanced Semiconductor Materials, Department of Chemistry, Zhejiang University Hangzhou 310030 China
| | - Yuyan Zhang
- State Key Laboratory of Silicon and Advanced Semiconductor Materials, Department of Chemistry, Zhejiang University Hangzhou 310030 China
| | - Yi Yuan
- State Key Laboratory of Silicon and Advanced Semiconductor Materials, Department of Chemistry, Zhejiang University Hangzhou 310030 China
| | - Jing Zhang
- State Key Laboratory of Silicon and Advanced Semiconductor Materials, Department of Chemistry, Zhejiang University Hangzhou 310030 China
| | - Peng Wang
- State Key Laboratory of Silicon and Advanced Semiconductor Materials, Department of Chemistry, Zhejiang University Hangzhou 310030 China
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Yu HJ, Xiao J, Chen J, Ren X, Qi YE, Min X, Shao G. Synthesis, Properties, and Application of Small-Molecule Hole-Transporting Materials Based on Acetylene-Linked Thiophene Core. Molecules 2023; 28:molecules28093739. [PMID: 37175149 PMCID: PMC10179914 DOI: 10.3390/molecules28093739] [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: 02/22/2023] [Revised: 04/07/2023] [Accepted: 04/20/2023] [Indexed: 05/15/2023] Open
Abstract
Three small molecule organic compounds based on conjugated acetylene-linked methoxy triphenylamine terminal groups with different substituted thiophene cores were synthesized and firstly applied as hole-transporting materials (HTMs). The electron-deficient acetylene linkers can tune the energy levels of frontier molecular orbitals. The physical property measurements show that the HTMs (CJ-05, CJ-06, and CJ-07) possess good stability, hydrophobicity, and film-forming ability. Further, the HTMs were applied in the MAPbI3-based perovskite solar cells (PSCs), and the best power conversion efficiency (PCE) of 6.04%, 6.77%, and 6.48% was achieved, respectively, which implies that they exhibit great potential in photovoltaic applications.
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Affiliation(s)
- Hui-Juan Yu
- Key Laboratory of Hexi Corridor Resources Utilization of Gansu Universities, College of Chemistry and Chemical Engineering, Hexi University, Zhangye 734000, China
- Guangdong Key Laboratory of Animal Conservation and Resource Utilization, Guangdong Public Laboratory of Wild Animal Conservation and Utilization, Institute of Zoology, Guangdong Academy of Sciences, Guangzhou 510260, China
| | - Jing Xiao
- School of Chemistry, Sun Yat-sen University, Guangzhou 510006, China
- Shenzhen Research Institute, Sun Yat-sen University, Shenzhen 518057, China
| | - Jian Chen
- School of Chemistry, Sun Yat-sen University, Guangzhou 510006, China
- Shenzhen Research Institute, Sun Yat-sen University, Shenzhen 518057, China
| | - Xuefeng Ren
- Key Laboratory of Hexi Corridor Resources Utilization of Gansu Universities, College of Chemistry and Chemical Engineering, Hexi University, Zhangye 734000, China
| | - Ya-E Qi
- Key Laboratory of Hexi Corridor Resources Utilization of Gansu Universities, College of Chemistry and Chemical Engineering, Hexi University, Zhangye 734000, China
| | - Xuemei Min
- Key Laboratory of Hexi Corridor Resources Utilization of Gansu Universities, College of Chemistry and Chemical Engineering, Hexi University, Zhangye 734000, China
| | - Guang Shao
- School of Chemistry, Sun Yat-sen University, Guangzhou 510006, China
- Shenzhen Research Institute, Sun Yat-sen University, Shenzhen 518057, China
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