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Liu X, Min J, Chen Q, Liu T, Qu G, Xie P, Xiao H, Liou JJ, Park T, Xu ZX. Synergy Effect of a π-Conjugated Ionic Compound: Dual Interfacial Energy Level Regulation and Passivation to Promote V oc and Stability of Planar Perovskite Solar Cells. Angew Chem Int Ed Engl 2022; 61:e202117303. [PMID: 35060264 DOI: 10.1002/anie.202117303] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2021] [Indexed: 11/07/2022]
Abstract
Defects and energy offsets at the bulk and heterojunction interfaces of perovskite are detrimental to the efficiency and stability of perovskite solar cells (PSCs). Herein, we designed an amphiphilic π-conjugated ionic compound (QAPyBF4 ), implementing simultaneous defects passivation and interface energy level alignments. The p-type conjugated cations passivated the surface trap states and optimized energy alignment at the perovskite/hole transport layer. The highly electronegative [BF4 ]- enriched at the SnO2 interface featured desired band alignment due to the dipole moment of this interlayer. The planar n-i-p PSC had an efficiency of 23.1 % with Voc of 1.2 V. Notably, the synergy effect elevated the intrinsic endothermic decomposition temperature of the perovskite. The modified devices showed excellent long-term thermal (85 °C) and operational stability at the maximum power point for 1000 h at 45 °C under continuous one-sun illumination with no appreciable efficiency loss.
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Affiliation(s)
- Xiaoyuan Liu
- Department of Chemistry, Guangdong-Hong Kong-Macao Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and Devices, Southern University of Science and Technology, Shenzhen, 518055, Guangdong, China.,College of Electronics and Information Engineering, Microelectronic Device and Circuit Reliability Research Center, Shenzhen University, Shenzhen, 518060, China
| | - Jihyun Min
- Department of Chemical Engineering Pohang University of Science and Technology (POSTECH), 77 Cheongam-Ro, Nam-Gu, Pohang, Gyeongbuk 37673, Korea
| | - Qian Chen
- Department of Chemistry, Guangdong-Hong Kong-Macao Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and Devices, Southern University of Science and Technology, Shenzhen, 518055, Guangdong, China
| | - Tuo Liu
- Department of Chemistry, University of Kentucky, Lexington, KY 40506, USA
| | - Geping Qu
- Department of Chemistry, Guangdong-Hong Kong-Macao Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and Devices, Southern University of Science and Technology, Shenzhen, 518055, Guangdong, China
| | - Pengfei Xie
- Department of Chemistry, Guangdong-Hong Kong-Macao Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and Devices, Southern University of Science and Technology, Shenzhen, 518055, Guangdong, China
| | - Hui Xiao
- Department of Chemistry, Guangdong-Hong Kong-Macao Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and Devices, Southern University of Science and Technology, Shenzhen, 518055, Guangdong, China
| | - Juin-Jei Liou
- College of Electronics and Information Engineering, Microelectronic Device and Circuit Reliability Research Center, Shenzhen University, Shenzhen, 518060, China
| | - Taiho Park
- Department of Chemical Engineering Pohang University of Science and Technology (POSTECH), 77 Cheongam-Ro, Nam-Gu, Pohang, Gyeongbuk 37673, Korea
| | - Zong-Xiang Xu
- Department of Chemistry, Guangdong-Hong Kong-Macao Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and Devices, Southern University of Science and Technology, Shenzhen, 518055, Guangdong, China
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Liu X, Min J, Chen Q, Liu T, Qu G, Xie P, Xiao H, Liou J, Park T, Xu Z. Synergy Effect of a π‐Conjugated Ionic Compound: Dual Interfacial Energy Level Regulation and Passivation to Promote
V
oc
and Stability of Planar Perovskite Solar Cells. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202117303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Xiaoyuan Liu
- Department of Chemistry Guangdong-Hong Kong-Macao Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and Devices Southern University of Science and Technology Shenzhen 518055, Guangdong China
- College of Electronics and Information Engineering Microelectronic Device and Circuit Reliability Research Center Shenzhen University Shenzhen 518060 China
| | - Jihyun Min
- Department of Chemical Engineering Pohang University of Science and Technology (POSTECH) 77 Cheongam-Ro, Nam-Gu Pohang Gyeongbuk 37673 Korea
| | - Qian Chen
- Department of Chemistry Guangdong-Hong Kong-Macao Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and Devices Southern University of Science and Technology Shenzhen 518055, Guangdong China
| | - Tuo Liu
- Department of Chemistry University of Kentucky Lexington KY 40506 USA
| | - Geping Qu
- Department of Chemistry Guangdong-Hong Kong-Macao Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and Devices Southern University of Science and Technology Shenzhen 518055, Guangdong China
| | - Pengfei Xie
- Department of Chemistry Guangdong-Hong Kong-Macao Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and Devices Southern University of Science and Technology Shenzhen 518055, Guangdong China
| | - Hui Xiao
- Department of Chemistry Guangdong-Hong Kong-Macao Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and Devices Southern University of Science and Technology Shenzhen 518055, Guangdong China
| | - Juin‐Jei Liou
- College of Electronics and Information Engineering Microelectronic Device and Circuit Reliability Research Center Shenzhen University Shenzhen 518060 China
| | - Taiho Park
- Department of Chemical Engineering Pohang University of Science and Technology (POSTECH) 77 Cheongam-Ro, Nam-Gu Pohang Gyeongbuk 37673 Korea
| | - Zong‐Xiang Xu
- Department of Chemistry Guangdong-Hong Kong-Macao Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and Devices Southern University of Science and Technology Shenzhen 518055, Guangdong China
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