Dual Surface Modifications of NiOx/Perovskite Interface for Enhancement of Device Stability

Lin，Jingyang1,2; Wang，Yantao1; Khaleed，Abdul1; Syed，Ali Asgher1; He，Yanling1; Chan，Christopher C.S.3; Li，Yin1; Liu，Kuan4; Li，Gang4; Wong，Kam Sing3; Popović，Jasminka5; Fan，Jing6; Ng，Alan Man Ching2; Djurišić，Aleksandra B.1

2023

10.1021/acsami.3c02156

ACS Applied Materials and Interfaces   影响因子和分区

1944-8244

1944-8252

Various phosphonic acid based self-assembled monolayers (SAMs) have been commonly used for interface modifications in inverted perovskite solar cells. This typically results in significant enhancement of the hole extraction and consequent increase in the power conversion efficiency. However, the surface coverage and packing density of SAM molecules can vary, depending on the chosen SAM material and underlying oxide layer. In addition, different SAM molecules have diverse effects on the interfacial energy level alignment and perovskite film growth, resulting in complex relationships between surface modification, efficiency, and lifetime. Here we show that ethanolamine surface modification combined with [2-(9H-carbazol-9-yl)ethyl]phosphonic acid (2PACz) results in significant improvement in device stability compared to devices with 2PACz modification only. The significantly smaller size of ethanolamine enables it to fill any gaps in 2PACz coverage and provide improved interfacial defect passivation, while its different chemical structure enables it to provide complementary effects to 2PACz passivation. Consequently, the perovskite films are more stable under illumination (slower photoinduced segregation), and the devices exhibit significant stability enhancement. Despite similar power conversion efficiencies (PCE) between 2PACz only and combined ethanolamine-2PACz modification (PCE of champion devices ∼21.6-22.0% for rigid and ∼20.2-21.0% for flexible devices), the T lifetime under simulated solar illumination in ambient is improved more than 15 times for both rigid and flexible devices.

flexible solar cells halide perovskite interface modification solar cells stability testing

SCI ; EI

英语

通讯

Croatian Science Foundation[PZS-2019-02-2068] ; NSFC[6207032617] ; University of Hong Kong, RGC CRF project[7018-20G]

Science & Technology - Other Topics ; Materials Science

Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary

WOS:000985649400001

AMER CHEMICAL SOC

20232114117362

Conversion efficiency ; Film growth ; Molecules ; Organic acids ; Passivation ; Perovskite ; Perovskite solar cells ; Stability

Minerals:482.2 ; Energy Conversion Issues:525.5 ; Protection Methods:539.2.1 ; Solar Cells:702.3 ; Organic Compounds:804.1 ; Atomic and Molecular Physics:931.3

2-s2.0-85159613398

Scopus

1.Department of Physics,The University of Hong Kong,Pokfulam Road,Hong Kong
2.Department of Physics,Southern University of Science and Technology,Shenzhen,No. 1088, Xueyuan Road, Guangdong,518055,China
3.Department of Electronic and Information Engineering,The Hong Kong Polytechnic University,Hung Hom,11 Yuk Choi Road,Hong Kong
4.Department of Physics,The Hong Kong University of Science and Technology,Clearwater Bay,Hong Kong
5.Ruđer Bošković Institute,Zagreb,Bijenička 54,10000,Croatia
6.Center for Computational Science and Engineering,Southern University of Science and Technology,Shenzhen,No. 1088, Xueyuan Road, Guangdong,518055,China

Lin，Jingyang,Wang，Yantao,Khaleed，Abdul,et al. Dual Surface Modifications of NiOx/Perovskite Interface for Enhancement of Device Stability[J]. ACS Applied Materials and Interfaces,2023,15(20):24437-24447.

Lin，Jingyang.,Wang，Yantao.,Khaleed，Abdul.,Syed，Ali Asgher.,He，Yanling.,...&Djurišić，Aleksandra B..(2023).Dual Surface Modifications of NiOx/Perovskite Interface for Enhancement of Device Stability.ACS Applied Materials and Interfaces,15(20),24437-24447.

Lin，Jingyang,et al."Dual Surface Modifications of NiOx/Perovskite Interface for Enhancement of Device Stability".ACS Applied Materials and Interfaces 15.20(2023):24437-24447.