Multidentate Chelation Achieves Bilateral Passivation toward Efficient and Stable Perovskite Solar Cells with Minimized Energy Losses

Yang, Haichao1; Li, Ru1; Gong, Shaokuan2; Wang, Huaxin1; Qaid, Saif M. H.3; Zhou, Qian1; Cai, Wensi1; Chen, Xihan2; Chen, Jiangzhao1; Zang, Zhigang1

2023-09-06

10.1021/acs.nanolett.3c02444

NANO LETTERS   Impact Factor & Quartile

1530-6984

1530-6992

Defects in the electron transport layer (ETL), perovskite, and buried interface will result in considerable nonradiative recombination. Here, a bottom-up bilateral modification strategy is proposed by incorporating arsenazo III (AA), a chromogenic agent for metal ions, to regulate SnO2 nanoparticles. AA can complex with uncoordinated Sn4+/Pb2+ in the form of multidentate chelation. Furthermore, by forming a hydrogen bond with formamidinium (FA), AA can suppress FA(+) defects and regulate crystallization. Multiple chemical bonds between AA and functional layers are established, synergistically preventing the agglomeration of SnO2 nanoparticles, enhancing carrier transport dynamics, passivating bilateral defects, releasing tensile stress, and promoting the crystallization of perovskite. Ultimately, the AA-optimized power conversion efficiency (PCE) of the methylammonium-free (MA-free) devices (Rb-0.02(FA(0.95)Cs(0.05))(0.98)PbI2.91Br0.03Cl0.06) is boosted from 20.88% to 23.17% with a high open-circuit voltage (VOC) exceeding 1.18 V and ultralow energy losses down to 0.37 eV. In addition, the optimized devices also exhibit superior stability.

perovskite solar cells SnO2 nanoparticles bilateral passivation multidentate chelation synergistic effects tensile stress releasing minimized energy losses

SCI

English

NI Journal Papers

Corresponding

Deputyship for Research and Innovation, Ministry of Education in Saudi Arabia[IFKSUOR3-073-2] ; National Natural Science Foundation of China["11974063","62274018"] ; Natural Science Foundation of Chongqing[cstc2020jcyj-jqX0028]

Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics

Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter

WOS:001063102800001

AMER CHEMICAL SOC

MATERIALS SCIENCE

Web of Science

1.Chongqing Univ, Minist Educ, Key Lab Optoelect Technol & Syst, Chongqing 400044, Peoples R China
2.Southern Univ Sci & Technol, SUSTech Energy Inst Carbon Neutral, Dept Mech & Energy Engn, Shenzhen 518055, Guangdong, Peoples R China
3.King Saud Univ, Coll Sci, Dept Phys & Astron, Riyadh 11451, Saudi Arabia

Yang, Haichao,Li, Ru,Gong, Shaokuan,et al. Multidentate Chelation Achieves Bilateral Passivation toward Efficient and Stable Perovskite Solar Cells with Minimized Energy Losses[J]. NANO LETTERS,2023,23(18).

Yang, Haichao.,Li, Ru.,Gong, Shaokuan.,Wang, Huaxin.,Qaid, Saif M. H..,...&Zang, Zhigang.(2023).Multidentate Chelation Achieves Bilateral Passivation toward Efficient and Stable Perovskite Solar Cells with Minimized Energy Losses.NANO LETTERS,23(18).

Yang, Haichao,et al."Multidentate Chelation Achieves Bilateral Passivation toward Efficient and Stable Perovskite Solar Cells with Minimized Energy Losses".NANO LETTERS 23.18(2023).