Lvpeng Yang, Tong Bie, Peiyu Ma, Jin Xin, Tho D. Nguyen, Ming Shao
{"title":"甲脒氯化物添加剂的双重功能提高了低维过氧化物太阳能电池的效率和稳定性","authors":"Lvpeng Yang, Tong Bie, Peiyu Ma, Jin Xin, Tho D. Nguyen, Ming Shao","doi":"10.1002/elt2.52","DOIUrl":null,"url":null,"abstract":"<p>Despite their excellent intrinsic stability, low-dimensional Ruddlesden-Popper (LDRP) perovskites face challenges with low power conversion efficiency (PCE), primarily due to the widen bandgap and limited charge transport caused by the bulky spacer cation. Herein, we introduce formamidinium chloride (FACl) as an additive into (4-FPEA)<sub>2</sub>MA<sub>4</sub>Pb<sub>5</sub>I<sub>16</sub> perovskite. On the one hand, the addition of FACl narrows the bandgap through cation exchange between MA<sup>+</sup> and FA<sup>+</sup>, thereby extending the light absorption range and enhancing photocurrent generation. On the other hand, this MA<sup>+</sup>/FA<sup>+</sup> cation exchange decelerates the sublimation of methylammonium chloride and prolongs the crystallization of LDRP perovskite, leading to higher crystallinity and better film quality with a decreased trap-state density. Consequently, this approach led to a remarkable PCE of 20.46% for <<i>n</i>> = 5 LDRP perovskite solar cells (PSCs), ranking among the highest for MA/FA mixed low dimensional PSCs reported to date. Remarkably, our PSCs maintained 90% and 92% of the initial efficiency even after 1300 h at (60 ± 5)°C and (60 ± 5)% relative humidity, respectively. This work promotes the development of LDRP PSCs with excellent efficiency and environmental stability for potential commercial application.</p>","PeriodicalId":100403,"journal":{"name":"Electron","volume":"2 3","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2024-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/elt2.52","citationCount":"0","resultStr":"{\"title\":\"Dual function of formamidinium chloride additive improves the efficiency and stability of low-dimensional perovskite solar cells\",\"authors\":\"Lvpeng Yang, Tong Bie, Peiyu Ma, Jin Xin, Tho D. Nguyen, Ming Shao\",\"doi\":\"10.1002/elt2.52\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Despite their excellent intrinsic stability, low-dimensional Ruddlesden-Popper (LDRP) perovskites face challenges with low power conversion efficiency (PCE), primarily due to the widen bandgap and limited charge transport caused by the bulky spacer cation. Herein, we introduce formamidinium chloride (FACl) as an additive into (4-FPEA)<sub>2</sub>MA<sub>4</sub>Pb<sub>5</sub>I<sub>16</sub> perovskite. On the one hand, the addition of FACl narrows the bandgap through cation exchange between MA<sup>+</sup> and FA<sup>+</sup>, thereby extending the light absorption range and enhancing photocurrent generation. On the other hand, this MA<sup>+</sup>/FA<sup>+</sup> cation exchange decelerates the sublimation of methylammonium chloride and prolongs the crystallization of LDRP perovskite, leading to higher crystallinity and better film quality with a decreased trap-state density. Consequently, this approach led to a remarkable PCE of 20.46% for <<i>n</i>> = 5 LDRP perovskite solar cells (PSCs), ranking among the highest for MA/FA mixed low dimensional PSCs reported to date. Remarkably, our PSCs maintained 90% and 92% of the initial efficiency even after 1300 h at (60 ± 5)°C and (60 ± 5)% relative humidity, respectively. This work promotes the development of LDRP PSCs with excellent efficiency and environmental stability for potential commercial application.</p>\",\"PeriodicalId\":100403,\"journal\":{\"name\":\"Electron\",\"volume\":\"2 3\",\"pages\":\"\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2024-06-16\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://onlinelibrary.wiley.com/doi/epdf/10.1002/elt2.52\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Electron\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1002/elt2.52\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Electron","FirstCategoryId":"1085","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/elt2.52","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Dual function of formamidinium chloride additive improves the efficiency and stability of low-dimensional perovskite solar cells
Despite their excellent intrinsic stability, low-dimensional Ruddlesden-Popper (LDRP) perovskites face challenges with low power conversion efficiency (PCE), primarily due to the widen bandgap and limited charge transport caused by the bulky spacer cation. Herein, we introduce formamidinium chloride (FACl) as an additive into (4-FPEA)2MA4Pb5I16 perovskite. On the one hand, the addition of FACl narrows the bandgap through cation exchange between MA+ and FA+, thereby extending the light absorption range and enhancing photocurrent generation. On the other hand, this MA+/FA+ cation exchange decelerates the sublimation of methylammonium chloride and prolongs the crystallization of LDRP perovskite, leading to higher crystallinity and better film quality with a decreased trap-state density. Consequently, this approach led to a remarkable PCE of 20.46% for <n> = 5 LDRP perovskite solar cells (PSCs), ranking among the highest for MA/FA mixed low dimensional PSCs reported to date. Remarkably, our PSCs maintained 90% and 92% of the initial efficiency even after 1300 h at (60 ± 5)°C and (60 ± 5)% relative humidity, respectively. This work promotes the development of LDRP PSCs with excellent efficiency and environmental stability for potential commercial application.