Domain-Size-Dependent Residual Stress Governs the Phase-Transition and Photoluminescence Behavior of Methylammonium Lead Iodide
Lintangpradipto, Muhammad Naufal
Zhumekenov, Ayan A.
Roqan, Iman S.
Ooi, Boon S.
Mohammed, Omar F.
Di Fabrizio, Enzo M.
KAUST DepartmentBiological and Environmental Sciences and Engineering (BESE) Division
Chemical Science Program
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Electrical Engineering Program
Functional Nanomaterials Lab (FuNL)
KAUST Catalysis Center (KCC)
KAUST Solar Center (KSC)
Material Science and Engineering Program
Physical Science and Engineering (PSE) Division
Semiconductor and Material Spectroscopy (SMS) Laboratory
Ultrafast Laser Spectroscopy and Four-dimensional Electron Imaging Research Group
Embargo End Date2022-02-11
Permanent link to this recordhttp://hdl.handle.net/10754/667410
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AbstractMethylammonium lead iodide (MAPbI3) perovskite has garnered significant interest as a versatile material for optoelectronic applications. The temperature-dependent photoluminescence (TDPL) and phase-transition behaviors revealed in previous studies have become standard indicators of defects, stability, charge carrier dynamics, and device performance. However, published reports abound with examples of irregular photoluminescence and phase-transition phenomena that are difficult to reconcile, posing major challenges in the correlation of those properties with the actual material state or with the subsequent device performance. In this paper, a unifying explanation for the seemingly inconsistent TDPL and phase-transition (orthorhombic-to-tetragonal) characteristics observed for MAPbI3 is presented. By investigating MAPbI3 perovskites with varying crystalline states, ranging from polycrystal to highly oriented crystal as well as single-crystals, key features in the TDPL and phase-transition behaviors are identified that are related to the extent of crystal domain-size-dependent residual stress and stem from the considerable volume difference (ΔV ≈ 4.5%) between the primitive unit cells of the orthorhombic (at 80 K) and tetragonal phases (at 300 K) of MAPbI3. This fundamental connection is essential for understanding the photophysics and material processing of soft perovskites.
CitationLee, K. J., Turedi, B., Giugni, A., Lintangpradipto, M. N., Zhumekenov, A. A., Alsalloum, A. Y., … Bakr, O. M. (2021). Domain-Size-Dependent Residual Stress Governs the Phase-Transition and Photoluminescence Behavior of Methylammonium Lead Iodide. Advanced Functional Materials, 2008088. doi:10.1002/adfm.202008088
SponsorsK.J.L., B.T., and A.G. contributed equally to this work. The authors gratefully acknowledge the financial support provided by King Abdullah University of Science and Technology (KAUST). This work was also supported by the Soonchunhyang University Research Fund.
JournalAdvanced Functional Materials