公开(公告)号：US11968886B2

公开(公告)日：2024-04-23

申请号：US18469581

申请日：2023-09-19

Applicant: Nanjing University of Posts & Telecommunications

Inventor： Ligang Xu ,  Wenbo Jia ,  Dongdong Yan

IPC: H10K85/50 ,  H10K30/10 ,  H10K30/50 ,  H10K30/86 ,  H10K71/12

CPC classification number: H10K85/50 ,  H10K30/10 ,  H10K30/50 ,  H10K30/86 ,  H10K71/12

Abstract: A preparation method of perovskite film based on semicarbazide hydrochloride (SEM-HCl) additive and a preparation method of photovoltaic device are provided, a perovskite optimized crystallization strategy is provided, a tin-based perovskite thin film is prepared based on a solution method, and a purpose of regulating and controlling perovskite crystallization is achieved by means of a cross-linking effect of special groups in SEM-HCl and perovskite components. Defects of crystals of the prepared perovskite film are reduced, the non-radiative recombination in a transmission process of carriers is suppressed, and a photoelectric conversion efficiency and a photovoltaic device stability are remarkably improved.

公开(公告)号：US20240099126A1

公开(公告)日：2024-03-21

申请号：US18469581

申请日：2023-09-19

Applicant: Nanjing University of Posts & Telecommunications

Inventor： Ligang Xu ,  Wenbo Jia ,  Dongdong Yan

IPC: H10K85/50 ,  H10K30/10 ,  H10K30/50 ,  H10K30/86 ,  H10K71/12

CPC classification number: H10K85/50 ,  H10K30/10 ,  H10K30/50 ,  H10K30/86 ,  H10K71/12

Abstract: A preparation method of perovskite film based on semicarbazide hydrochloride (SEM-HCl) additive and a preparation method of photovoltaic device are provided, a perovskite optimized crystallization strategy is provided, a tin-based perovskite thin film is prepared based on a solution method, and a purpose of regulating and controlling perovskite crystallization is achieved by means of a cross-linking effect of special groups in SEM-HCl and perovskite components. Defects of crystals of the prepared perovskite film are reduced, the non-radiative recombination in a transmission process of carriers is suppressed, and a photoelectric conversion efficiency and a photovoltaic device stability are remarkably improved.