journal article·2024-02-05

Intermediate Phase Engineering for Efficient and Stable All-Inorganic Perovskite Solar Cells

Yuanyuan Zhao, Qiurui Wang, Nini Hao, Qiang Zhang, Jingwei Zhu, Hao Huang, Qunwei Tang

ACS Materials Letters· Volume 6· Issue 2
Publisher page

Abstract

The serious carrier recombination in all-inorganic perovskite solar cells (PSCs) is the key factor limiting their efficiency. Residual stress and defects arising from the fabrication process can significantly affect carrier transport, recombination kinetics, activation energy for ion migration, and ultimately the efficiency and stability of PSCs. Herein, the inorganic additive ammonium halide was introduced into the precursor solution to form the NH 4 Pb 2 Br 5 intermediate phase and regulate the nucleation and crystallization of the film through the interaction of ammonium and chlorine groups with CsPbBr 3 crystals. As a result of stress relaxation and simultaneous defect passivation of the perovskite films, the top-performing PSC displays an impressive efficiency of 10.61%, with an ultrahigh open-circuit voltage of 1.650 V. Notably, the device also exhibits significantly improved stability against prolonged exposure to persistent humidity (80% RH) and heat (80 °C) over 120 days.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Perovskite Materials and Applications · Conducting polymers and applications · Solid-state spectroscopy and crystallography

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

Affiliations

College of Mechanical and Electronic Engineering, Shandong University of Science and Technology, Qingdao 266590, China

College of Materials Science and Engineering, Sichuan University, Chengdu 610065, China

Guangxi Key Laboratory of Processing for Non-ferrous Metals and Featured Materials, School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China

Institute of Carbon Neutrality, College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao 266590, China

Funding

National Key Research and Development Program of China · Qingdao Postdoctoral Science Foundation · China Postdoctoral Science Foundation · Postdoctoral Innovation Project of Shandong Province · National Natural Science Foundation of China · Project of Shandong Province Higher Educational Young Innovative Team

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