journal article·2023-10Open access

Synergetic Effect of Aluminum Oxide and Organic Halide Salts on Two‐Dimensional Perovskite Layer Formation and Stability Enhancement of Perovskite Solar Cells

Eunyoung Choi, Jin‐Won Lee, Miguel Anaya, Alessandro Mirabelli, Hongjae Shim, Joseph Strzalka, Jongchul Lim, Siwon Yun, Milos Dubajic, Jihoo Lim, Jan Seidel, Raphael Edem Agbenyeke, Chang Gyoun Kim, Nam Joong Jeon, Arman Mahboubi Soufiani, Helen Hejin Park, Jae Sung Yun

Advanced Energy Materials· Volume 13· Issue 39

Abstract

Abstract Long‐chain organic halide salts are widely used in perovskite‐based optoelectronic devices for surface passivation owing to their capability to interact with the surface defects of perovskites. Here, aluminum oxide (AlOx) is introduced via atomic layer deposition onto octylammonium iodide (OAI) to exploit the benefits of organic halide salts without generating undesired defects. The devices incorporating AlOx on OAI‐treated perovskite (OAI/AlOx) show enhancement in both device performance and photo‐stability compared to those with only treatment. A diffusion of aluminum from AlOx into the perovskite through surface characterization contributes to a uniform photo‐generated carrier transport in both the surface and the bulk of the perovskite absorber. In addition, it is revealed that light‐induced two‐dimensional perovskite formation on OAI/AlOx. This may be ascribed to preventing the loss of OA cations due to the presence of AlOx, leading to a decrease in the number of iodine anions which suppresses the light‐induced degradation of corresponding devices. Consequently, the devices show over 24% efficiency and retain their efficiency over 1000 hours under continuous light illumination.
Source: crossref · Quality: baseline

Research context

OpenAlex topics: Perovskite Materials and Applications · Organic Light-Emitting Diodes Research · Chalcogenide Semiconductor Thin Films

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Australian Centre for Advanced Photovoltaics (ACAP) School of Photovoltaic and Renewable Energy Engineering University of New South Wales Sydney NSW 2052 Australia

Advanced Materials Division Korea Research Institute of Chemical Technology (KRICT) Daejeon 34114 South Korea

Department of Chemical Engineering and Biotechnology University of Cambridge Cambridge CB3 0AS UK

X‐Ray Science Division, Argonne National Laboratory Lemont IL 60439 USA

Graduate School of Energy Science and Technology (GEST) Chungnam National University Daehak‐ro 99, Yuseong‐gu Daejeon 34134 Republic of Korea

School of Materials Science and Engineering University of New South Wales Sydney NSW 2052 Australia

ARC Centre of Excellence in Future Low‐Energy Electronics Technologies (FLEET) University of New South Wales Sydney NSW 2052 Australia

Department of Advanced Materials and Chemical Engineering University of Science and Technology (UST) Daejeon 34113 South Korea

School of Chemistry University of Bristol Bristol BS8 1TS UK

School of Computer Science and Electronic Engineering Advanced Technology Institute (ATI) University of Surrey Guildford Surrey GU2 7XH UK

Funding

Australian Research Council · National Research Foundation of Korea · Korea Research Institute of Chemical Technology · Royal Society

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