Bridging the Interfacial Contact for Improved Stability and Efficiency of Inverted Perovskite Solar Cells

Huang, Yulan1,2; Liu, Tanghao1; Li, Dongyang2; Lian, Qing2; Wang, Yun2; Wang, Guoliang2; Mi, Guojun2; Zhou, Yuanyuan3; Amini, Abbas4; Xu, Baomin2; Tang, Zikang1; Cheng, Chun2; Xing, Guichuan1

2022-05-01

10.1002/smll.202201694

Small   影响因子和分区

1613-6810

1613-6829

Inverted perovskite solar cells (PSCs) have received widespread attention due to their facile fabrication and wide applications. However, their power conversion efficiency (PCE) is reported lower than that of regular PSCs because of the undesirable interfacial contact between perovskite and the hydrophobic hole transport layer (HTL). Here, an interface regulation strategy is proposed to overcome this limitation. A small molecule ([2-(9H-carbazol-9-yl) ethyl] phosphonic acid, abbreviated as 2P), composed of carbazole and phosphonic acid groups, is inserted between perovskite and HTL. Morphological characterization and theoretical calculation reveal that perovskite bonds stronger on 2P-modified HTL than on pristine HTL. The improved interfacial contact facilitates hole extraction and retards degradation. Upon the incorporation of 2P, inverted PSCs deliver a high PCE of over 22% with superior stability, keeping 84.6% of initial efficiency after 7200 h storage under an ambient atmosphere with a relative humidity of approximate to 30-40%. This strategy provides a simple and efficient way to boost the performance of inverted PSCs.

hole extraction interfacial contact inverted perovskite solar cells stability

SCI ; EI

英语

通讯

Natural Science Foundation of China[91963129,51776094,61935017,62175268] ; Basic Research Project of Science and Technology Plan of Shenzhen[JCYJ20180504165655180] ; Shenzhen-Hong Kong-Macao Science and Technology Innovation Project (Category C)[SGDX2020110309360100] ; Science and Technology Development Fund, Macao SAR[FDCT-0044/2020/A1] ; UM's research fund["MYRG2018-00148-IAPME","MYRG2020-00151IAPME"] ; Natural Science Foundation of Guangdong Province, China[2019A1515012186] ; Guangdong-Hong Kong-Macao Joint Laboratory of Optoelectronic and Magnetic Functional Materials[2019B121205002] ; Foundation of Shenzhen Science and Technology Innovation Committee[JCYJ20180302174021198]

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

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

WOS:000799425800001

WILEY-V C H VERLAG GMBH

20222012128786

Efficiency ; Extraction ; Organic acids ; Perovskite

Minerals:482.2 ; Solar Cells:702.3 ; Chemical Operations:802.3 ; Organic Compounds:804.1 ; Production Engineering:913.1

Web of Science

1.Univ Macau, Inst Appl Phys & Mat Engn, Joint Key Lab Minist Educ, Ave Univ, Taipa 999078, Macao, Peoples R China
2.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Guangdong, Peoples R China
3.Hong Kong Baptist Univ, Dept Phys, Kowloon, Hong Kong 999077, Peoples R China
4.Western Sydney Univ, Ctr Infrastruct Engn, Kingswood, NSW 2751, Australia

Huang, Yulan,Liu, Tanghao,Li, Dongyang,et al. Bridging the Interfacial Contact for Improved Stability and Efficiency of Inverted Perovskite Solar Cells[J]. Small,2022,18.

Huang, Yulan.,Liu, Tanghao.,Li, Dongyang.,Lian, Qing.,Wang, Yun.,...&Xing, Guichuan.(2022).Bridging the Interfacial Contact for Improved Stability and Efficiency of Inverted Perovskite Solar Cells.Small,18.

Huang, Yulan,et al."Bridging the Interfacial Contact for Improved Stability and Efficiency of Inverted Perovskite Solar Cells".Small 18(2022).