Terbium‐Doped and Dual‐Passivated γ‐CsPb(I1−xBrx)3 Inorganic Perovskite Solar Cells with Improved Air Thermal Stability and High Efficiency
Source abstract
Abstract
Abstract Realizing photoactive and thermodynamically stable all‐inorganic perovskite solar cells (PSCs) remains a challenging task within halide perovskite photovoltaic (PV) research. Here, a dual strategy for realizing efficient inorganic mixed halide perovskite PV devices based on a terbium‐doped solar absorber, that is, CsPb1−xTbxI2Br, is reported, which undertakes a bulk and surface passivation treatment in the form of CsPb1−xTbxI2Br quantum dots, to maintain a photoactive γ‐phase under ambient conditions and with significantly improved operational stability. Devices fabricated from these air‐processed perovskite thin films exhibit an air‐stable power conversion efficiency (PCE) that reaches 17.51% (small‐area devices) with negligible hysteresis and maintains >90% of the initial efficiency when operating for 600 h under harsh environmental conditions, stemming from the combined effects of the dual‐protection strategy. This approach is further examined within large‐area PSC modules (19.8 cm2 active area) to realize 10.94% PCE and >30 days ambient stability, as well as within low‐bandgap γ‐CsPb0.95Tb0.05I2.5Br0.5 (Eg = 1.73 eV) materials, yielding 19.01% (18.43% certified) PCE.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Perovskite Materials and Applications · Quantum Dots Synthesis And Properties · Chalcogenide Semiconductor Thin Films
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Polymer Energy Materials Laboratory School of Chemical Engineering Chonnam National University Gwangju‐S, Jeollanam‐do 61186 Korea
Optoelectronic Convergence Research Center Chonnam National University Gwangju, Jeollanam‐do 61186 Korea
School of Chemistry Cardiff University Main Building, Park Place Cardiff Wales CF10 3AT UK
Department of Materials Imperial College London Exhibition Road London SW7 2AZ UK
Department of Energy and Mineral Engineering Pennsylvania State University University Park PA 16802 USA
cMACS Department of Microbial and Molecular Systems KU Leuven Leuven 3001 Belgium
Group for Molecular Engineering of Functional Materials, Institute of Chemical Sciences and Engineering EPFL VALAIS Sion 1951 Switzerland
Thin Film Materials Laboratory Department of Physics Shivaji University Kolhapur Maharashtra 416004 India
Funding
National Research Foundation of Korea · Ministry of Science, ICT and Future Planning
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