Surface Re-Engineering of Perovskites with Buckybowls to Boost the Inverted-Type Photovoltaics

Xing, Zhou1; An, Ming-Wei2,3; Chen, Zuo-Chang2; Hu, Mingyu1; Huang, Xianzhen1; Deng, Lin-Long; Zhang, Qianyan2; Guo, Xugang3; Xie, Su-Yuan2; Yang, Shihe1,4

2022-08-03

10.1021/jacs.2c05235

Journal of the American Chemical Society   Impact Factor & Quartile

0002-7863

1520-5126

Despite their multifaceted advantages, inverted perovskite solar cells (PSCs) still suffer from lower power conversion efficiencies (PCEs) than their regular counterparts, which is largely due to recombination energy losses (E-loss) that arise from the chemical, physical, and energy level mismatches, especially at the interfaces between perovskites and fullerene electron transport layers (ETLs). To address this problem, we herein introduce an aminium iodide derivative of a buckybowl (aminocorannulene) that is molecularly layered at the perovskite-ETL interface. Strikingly, besides passivating the PbI2-rich perovskite surface, the aminocorannulene enforces a vertical dipole and enhances the surface n-type character that is more compatible with the ETL, thus boosting the electron extraction and transport dynamics and suppressing interfacial E-loss. As a result, the champion PSC achieves an excellent PCE of over 22%, which is superior compared to that of the control device (similar to 20%). Furthermore, the device stability is significantly enhanced, owing to a lock-and-key-like grip on the mobile iodides by the buckybowls and the resultant increase of the interfacial ion-migration barrier. This work highlights the potential of buckybowls for the multifunctional surface engineering of perovskite toward high-performance and stable PSCs.

SCI ; EI

English

NI Journal Papers

Others

National Natural Science Foundation of China["U2001217","21972006","21721001","92061122","92061204"] ; Shenzhen Peacock Plan[KQTD2016053015544057] ; Shenzhen-Hong Kong In-novation Circle United Research Project[SGLH20180622092406130] ; China Postdoctoral Science Foundation[2020M680197]

Chemistry

Chemistry, Multidisciplinary

WOS:000832240900001

AMER CHEMICAL SOC

20223412593608

Electron transport properties ; Energy dissipation ; Layered semiconductors ; Lead compounds ; Perovskite solar cells

Minerals:482.2 ; Energy Losses (industrial and residential):525.4 ; Solar Cells:702.3 ; Semiconducting Materials:712.1

Web of Science

1.Peking Univ, Sch Chem Biol & Biotechnol, Shenzhen Grad Sch, Guangdong Prov Key Lab Nanomicro Mat Res, Shenzhen 518055, Guangdong, Peoples R China
2.Xiamen Univ, Coll Chem & Chem Engn, iChEM Collaborat Innovat Ctr Chem Energy Mat, Dept Chem,State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Fujian, Peoples R China
3.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Guangdong Prov Key Lab Funct Oxide Mat & Devices, Shenzhen 518055, Guangdong, Peoples R China
4.Inst Biomed Engn, Shenzhen Bay Lab, Shenzhen 518055, Guangdong, Peoples R China

Xing, Zhou,An, Ming-Wei,Chen, Zuo-Chang,et al. Surface Re-Engineering of Perovskites with Buckybowls to Boost the Inverted-Type Photovoltaics[J]. Journal of the American Chemical Society,2022,144(30):13839-13850.

Xing, Zhou.,An, Ming-Wei.,Chen, Zuo-Chang.,Hu, Mingyu.,Huang, Xianzhen.,...&Yang, Shihe.(2022).Surface Re-Engineering of Perovskites with Buckybowls to Boost the Inverted-Type Photovoltaics.Journal of the American Chemical Society,144(30),13839-13850.

Xing, Zhou,et al."Surface Re-Engineering of Perovskites with Buckybowls to Boost the Inverted-Type Photovoltaics".Journal of the American Chemical Society 144.30(2022):13839-13850.