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.

公开(公告)号：US12225743B2

公开(公告)日：2025-02-11

申请号：US18818668

申请日：2024-08-29

Applicant: Nanjing University of Posts & Telecommunications

Inventor： Ligang Xu ,  Wenxuan Lv ,  Runfeng Chen ,  Wei Huang

IPC: H01L31/044 ,  H10K30/40 ,  H10K30/88

Abstract: A long-lasting and stable perovskite solar cell utilizes fluorine-containing inorganic ammonium salts to form ion exchange with perovskite to construct a perovskite light-absorbing layer to protect the perovskite, greatly improving stability of the perovskite solar cell. The perovskite solar cell can maintain 94% and 81% of its initial efficiency after being placed in a nitrogen-filled glove box and humid air for 14,016 hours and 2,500 hours, respectively, and can still maintain 83% of its initial efficiency after performed by heat aging at 85° C. for 1,248 hours, reaching a world-class level. A preparation method of the perovskite solar cell is simple, materials used to prepare the perovskite solar cell are inexpensive, and the stability of an obtained device is significantly improved under various conditions.

公开(公告)号：US20240423000A1

公开(公告)日：2024-12-19

申请号：US18818668

申请日：2024-08-29

Applicant: Nanjing University of Posts & Telecommunications

Inventor： Ligang Xu ,  Wenxuan Lv ,  Runfeng Chen ,  Wei Huang

IPC: H10K30/88 ,  H10K30/40

Abstract: A long-lasting and stable perovskite solar cell utilizes fluorine-containing inorganic ammonium salts to form ion exchange with perovskite to construct a perovskite light-absorbing layer to protect the perovskite, greatly improving stability of the perovskite solar cell. The perovskite solar cell can maintain 94% and 81% of its initial efficiency after being placed in a nitrogen-filled glove box and humid air for 14,016 hours and 2,500 hours, respectively, and can still maintain 83% of its initial efficiency after performed by heat aging at 85° C. for 1,248 hours, reaching a world-class level. A preparation method of the perovskite solar cell is simple, materials used to prepare the perovskite solar cell are inexpensive, and the stability of an obtained device is significantly improved under various conditions.