Lee, Hyeonseok Moon, Taeho Lee, Younghyun Kim, Jinhyun 2025-05-09T06:00:40Z 2025-05-09T06:00:40Z 2025-05-07 2025-02 2311-6706 https://pubs.kist.re.kr/handle/201004/152386 Quasi-two-dimensional (2D) perovskite embodies characteristics of both three-dimensional (3D) and 2D perovskites, achieving the superior external environment stability structure of 2D perovskites alongside the high efficiency of 3D perovskites. This effect is realized through critical structural modifications in device fabrication. Typically, perovskites have an octahedral structure, generally ABX3, where an organic ammonium cation (A') participates in forming the perovskite structure, with A'(n) (n = 1 or 2) sandwiched between A(n-1)B(n)X(3n+1) perovskite layers. Depending on whether A' is a monovalent or divalent cation, 2D perovskites are classified into Ruddlesden-Popper perovskite or Dion-Jacobson perovskite, each generating different structures. Although each structure achieves similar effects, they incorporate distinct mechanisms in their formation. And according to these different structures, various properties appear, and additive and optimizing methods to increase the efficiency of 3D perovskites also exist in 2D perovskites. In this review, scientific understanding and engineering perspectives of the quasi-2D perovskite is investigated, and the optimal structure quasi-2D and the device optimization is also discussed to provide the insight in the field. English Shanghai Jiao Tong University Press Structural Mechanisms of Quasi-2D Perovskites for Next-Generation Photovoltaics Article 10.1007/s40820-024-01609-9 1 Nano-Micro Letters, v.17 Nano-Micro Letters 17 Y scie scopus 001467568400001 2-s2.0-85218207559 Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Science & Technology - Other Topics Materials Science Physics Review LIGHT-EMITTING-DIODES RUDDLESDEN-POPPER SOLAR-CELLS QUANTUM CONFINEMENT BAND-GAP HYBRIDS (CNH2N+1NH3)(2)PBI4 DIELECTRIC-CONSTANT PHASE-TRANSITIONS DEGRADATION LEAD IODIDE PEROVSKITE Quantum structure Quasi-2D perovskite Perovskite Ruddlesden-Popper Dion-Jacobson