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Benzothiadiazole-based hole transport materials for high-efficiency dopant-free perovskite solar cells: Molecular planarity effect
Zhou, Xiang1,2; Kong, Fantai1; Sun, Yuan1; Huang, Yin1,2; Zhang, Xianxi3; Ghadari, Rahim4
2020-05-01
Source PublicationJOURNAL OF ENERGY CHEMISTRY
ISSN2095-4956
Corresponding AuthorKong, Fantai(kongfantai@163.com)
AbstractA new benzothiadiazole-based D-A-D hole transport material (DTBT) has been designed and synthesized with a more planar structure by introducing of thiophene bridges. The results indicate a lower band gap and quite higher hole mobility for the DTBT. Furthermore, the enhancement in molecular planarity with simple thiophene unit increases the hole mobility of DTBT (8.77 x10(-4) cm(2) V-1 s(-1)) by about 40%. And when DTBT is used as hole transport material in perovskite solar cells, the photoelectric conversion efficiency of the corresponding dopant-free devices is also significantly improved compared with that of the conventional BT model molecule without thiophene. In terms of device stability, DTBT-based devices show a favorable long-term stability, which keep 83% initial efficiency after 15 days. Therefore, the introducing of thiophene bridges in D-A-D typed HTMs can improve the molecular planarity effectively, thereby increasing the hole mobility and improving device performance. (C) 2019 Science Press and Dalian Institute of Chemica lPhysics, Chinese Academy of Sciences. Published by Elsevier B.V. and Science Press. All rights reserved.
KeywordHole transport materials Planarity Perovskite Solar cells
DOI10.1016/j.jechem.2019.09.020
WOS KeywordPERFORMANCE ; CORE
Indexed BySCI
Language英语
Funding ProjectNational Key R&D Program of China[2018YFB1500101] ; National Basic Research Program of China[2015CB932200] ; CAS-Iranian Vice Presidency for Science and Technology Joint Research Project[116134KYSB20160130]
Funding OrganizationNational Key R&D Program of China ; National Basic Research Program of China ; CAS-Iranian Vice Presidency for Science and Technology Joint Research Project
WOS Research AreaChemistry ; Energy & Fuels ; Engineering
WOS SubjectChemistry, Applied ; Chemistry, Physical ; Energy & Fuels ; Engineering, Chemical
WOS IDWOS:000514835800015
PublisherELSEVIER
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.hfcas.ac.cn:8080/handle/334002/103858
Collection中国科学院合肥物质科学研究院
Corresponding AuthorKong, Fantai
Affiliation1.Chinese Acad Sci, Inst Appl Technol, Hefei Inst Phys Sci, Key Lab Photovolta & Energy Conservat Mat, Hefei 230088, Anhui, Peoples R China
2.Univ Sci & Technol China, Hefei 230026, Anhui, Peoples R China
3.Liaocheng Univ, Shandong Prov Collaborat Innovat Ctr Chem Energy, Liaocheng 252000, Shandong, Peoples R China
4.Univ Tabriz, Fac Chem, Dept Organ & Biochem, Computat Chem Lab, Tabriz 5166616471, Iran
Recommended Citation
GB/T 7714
Zhou, Xiang,Kong, Fantai,Sun, Yuan,et al. Benzothiadiazole-based hole transport materials for high-efficiency dopant-free perovskite solar cells: Molecular planarity effect[J]. JOURNAL OF ENERGY CHEMISTRY,2020,44.
APA Zhou, Xiang,Kong, Fantai,Sun, Yuan,Huang, Yin,Zhang, Xianxi,&Ghadari, Rahim.(2020).Benzothiadiazole-based hole transport materials for high-efficiency dopant-free perovskite solar cells: Molecular planarity effect.JOURNAL OF ENERGY CHEMISTRY,44.
MLA Zhou, Xiang,et al."Benzothiadiazole-based hole transport materials for high-efficiency dopant-free perovskite solar cells: Molecular planarity effect".JOURNAL OF ENERGY CHEMISTRY 44(2020).
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