Publications by authors named "Annan Zhu"

The stabilization of the formamidinium lead iodide (FAPbI) structure is pivotal for the development of efficient photovoltaic devices. Employing two-dimensional (2D) layers to passivate the three-dimensional (3D) perovskite is essential for maintaining the α-phase of FAPbI and enhancing the power conversion efficiency (PCE) of perovskite solar cells (PSCs). However, the role of bulky ligands in the phase management of 2D perovskites, crucial for the stabilization of FAPbI, has not yet been elucidated.

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Inverted perovskite solar cells (PSCs) are a promising technology for commercialization due to their reliable operation and scalable fabrication. However, in inverted PSCs, depositing a high-quality perovskite layer comparable to those realized in normal structures still presents some challenges. Defects at grain boundaries and interfaces between the active layer and carrier extraction layer seriously hinder the power conversion efficiency (PCE) and stability of these cells.

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2D perovskites based on Formamidinium (FA) hold the potential for excellent stability and a broad absorption range, making them attractive materials for solar cells. However, FA-based 2D perovskites produced via one-step processing exhibit poor crystallinity and random quasi-quantum wells (QWs), leading to subpar photovoltaic performance. In this study, a seed-induced growth approach is introduced employing MAPbCl and BDAPbI in the deposition of FA-based Dion-Jacobson 2D perovskite films.

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Synopsis of recent research by authors named "Annan Zhu"

  • - Annan Zhu's research primarily focuses on enhancing the efficiency and stability of perovskite solar cells (PSCs) by exploring various structural modifications and materials, particularly in two-dimensional (2D) and three-dimensional (3D) perovskite heterostructures.
  • - Recent studies investigate the role of 2D layers in stabilizing the α-phase of formamidinium lead iodide (FAPbI) and demonstrate that employing bulky ligands can improve photovoltaic performance through better phase management.
  • - Zhu's work also highlights innovative techniques such as seed-induced growth for improving crystallinity in formamidinium-based 2D perovskites and synergistic passivation methods to address defects, showcasing a path toward more reliable and efficient inverted PSC architectures.

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