Zhenbo Cao , Jianming Mao , Dan Lu , Shoaib Iqbal , Mengqi Geng , Jialiang Li , Le Jiang , Xinrui Ma , Yubin Guo , Tingting Xu
{"title":"碳基钙钛矿太阳能电池通过体和表面协同钝化效应增强光伏性能","authors":"Zhenbo Cao , Jianming Mao , Dan Lu , Shoaib Iqbal , Mengqi Geng , Jialiang Li , Le Jiang , Xinrui Ma , Yubin Guo , Tingting Xu","doi":"10.1016/j.orgel.2025.107287","DOIUrl":null,"url":null,"abstract":"<div><div>Despite significant efficiency improvements, the long-term stability of carbon-based perovskite solar cells (PSCs) remains a critical challenge. Passivation treatment of perovskite films has been proven to considerably improve the performance of PSCs, including power conversion efficiency (PCE) and long-term stability. This study utilizes a small molecule 2-amino-5-(trifluoromethyl) pyridine (5-TFMAP) with bidentate groups, in conjunction with 2-phenylethanamine iodide (PEAI), for passivating both the grain boundaries and surface of CH<sub>3</sub>NH<sub>3</sub>PbI<sub>3</sub> films in carbon-based PSCs. The amino group of PEAI, the two electron rich nitrogen atoms and amino group on the pyridine ring of 5-TFMAP all have strong interactions with the under-coordinated Pb<sup>2+</sup>, and trifluoromethyl of 5-TFMAP can improve the hydrophobicity of perovskite films. As a result, the optimal PCE of the carbon-based PSCs after dual passivation is 15.2%, while the efficiency of the control device is 11.2%. In addition, the long-term stability of PSCs treated with dual passivation is significantly enhanced, with the PCE retaining 80% of its initial value after 1200 h of storage at room temperature under a relative humidity of approximately 35%. The remarkable performance of the as-fabricated cells can be attributed to the combined effect of PEAI and 5-TFMAP, which separately passivate the bulk and surfaces of perovskite films, effectively decreasing defect density, improving carrier transport, and reducing nonradiative recombination. This work provides valuable insights towards improving the PCE and stability of carbon-based PSCs by employing combined passivation techniques.</div></div>","PeriodicalId":399,"journal":{"name":"Organic Electronics","volume":"144 ","pages":"Article 107287"},"PeriodicalIF":2.6000,"publicationDate":"2025-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Enhanced photovoltaic performance of carbon-based perovskite solar cells through synergetic passivation effects via bulk and surface\",\"authors\":\"Zhenbo Cao , Jianming Mao , Dan Lu , Shoaib Iqbal , Mengqi Geng , Jialiang Li , Le Jiang , Xinrui Ma , Yubin Guo , Tingting Xu\",\"doi\":\"10.1016/j.orgel.2025.107287\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Despite significant efficiency improvements, the long-term stability of carbon-based perovskite solar cells (PSCs) remains a critical challenge. Passivation treatment of perovskite films has been proven to considerably improve the performance of PSCs, including power conversion efficiency (PCE) and long-term stability. This study utilizes a small molecule 2-amino-5-(trifluoromethyl) pyridine (5-TFMAP) with bidentate groups, in conjunction with 2-phenylethanamine iodide (PEAI), for passivating both the grain boundaries and surface of CH<sub>3</sub>NH<sub>3</sub>PbI<sub>3</sub> films in carbon-based PSCs. The amino group of PEAI, the two electron rich nitrogen atoms and amino group on the pyridine ring of 5-TFMAP all have strong interactions with the under-coordinated Pb<sup>2+</sup>, and trifluoromethyl of 5-TFMAP can improve the hydrophobicity of perovskite films. As a result, the optimal PCE of the carbon-based PSCs after dual passivation is 15.2%, while the efficiency of the control device is 11.2%. In addition, the long-term stability of PSCs treated with dual passivation is significantly enhanced, with the PCE retaining 80% of its initial value after 1200 h of storage at room temperature under a relative humidity of approximately 35%. The remarkable performance of the as-fabricated cells can be attributed to the combined effect of PEAI and 5-TFMAP, which separately passivate the bulk and surfaces of perovskite films, effectively decreasing defect density, improving carrier transport, and reducing nonradiative recombination. This work provides valuable insights towards improving the PCE and stability of carbon-based PSCs by employing combined passivation techniques.</div></div>\",\"PeriodicalId\":399,\"journal\":{\"name\":\"Organic Electronics\",\"volume\":\"144 \",\"pages\":\"Article 107287\"},\"PeriodicalIF\":2.6000,\"publicationDate\":\"2025-06-19\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Organic Electronics\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S156611992500093X\",\"RegionNum\":4,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Organic Electronics","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S156611992500093X","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Enhanced photovoltaic performance of carbon-based perovskite solar cells through synergetic passivation effects via bulk and surface
Despite significant efficiency improvements, the long-term stability of carbon-based perovskite solar cells (PSCs) remains a critical challenge. Passivation treatment of perovskite films has been proven to considerably improve the performance of PSCs, including power conversion efficiency (PCE) and long-term stability. This study utilizes a small molecule 2-amino-5-(trifluoromethyl) pyridine (5-TFMAP) with bidentate groups, in conjunction with 2-phenylethanamine iodide (PEAI), for passivating both the grain boundaries and surface of CH3NH3PbI3 films in carbon-based PSCs. The amino group of PEAI, the two electron rich nitrogen atoms and amino group on the pyridine ring of 5-TFMAP all have strong interactions with the under-coordinated Pb2+, and trifluoromethyl of 5-TFMAP can improve the hydrophobicity of perovskite films. As a result, the optimal PCE of the carbon-based PSCs after dual passivation is 15.2%, while the efficiency of the control device is 11.2%. In addition, the long-term stability of PSCs treated with dual passivation is significantly enhanced, with the PCE retaining 80% of its initial value after 1200 h of storage at room temperature under a relative humidity of approximately 35%. The remarkable performance of the as-fabricated cells can be attributed to the combined effect of PEAI and 5-TFMAP, which separately passivate the bulk and surfaces of perovskite films, effectively decreasing defect density, improving carrier transport, and reducing nonradiative recombination. This work provides valuable insights towards improving the PCE and stability of carbon-based PSCs by employing combined passivation techniques.
期刊介绍:
Organic Electronics is a journal whose primary interdisciplinary focus is on materials and phenomena related to organic devices such as light emitting diodes, thin film transistors, photovoltaic cells, sensors, memories, etc.
Papers suitable for publication in this journal cover such topics as photoconductive and electronic properties of organic materials, thin film structures and characterization in the context of organic devices, charge and exciton transport, organic electronic and optoelectronic devices.