{"title":"评估卤化物过氧化物中离子迁移的工具集","authors":"Natalia Yantara , Nripan Mathews","doi":"10.1016/j.joule.2024.02.022","DOIUrl":null,"url":null,"abstract":"<div><p>Halide perovskites, known for their tunable and exceptional optoelectronic properties, have been extensively explored for photovoltaics, light-emitting diodes, photodetectors, and memristors. With solar cell efficiencies closing on theoretical limits, stabilization of perovskite devices—especially via control of the ionic activity within the device—is a research gap that needs to be addressed before its commercialization. Solar cell stability is directly linked to ionic defects, and their effective passivation is essential for curbing ionic migration and associated deleterious effects. However, techniques to quantify and directly observe ionic migration are limited by the soft ionic lattice nature of the perovskite as well as its mixed ionic-electronic conductivity. This review examines both theoretical and experimental approaches to understand intrinsic and extrinsic ionic motion in halide perovskites at the material and device level. In addition to elemental and molecular analysis techniques that directly identify the ion in motion, spectroscopy techniques that measure properties associated with local stoichiometry changes have also been deployed. Measurement artifacts, strategies to mitigate their occurrence, as well as ways to differentiate electronic and ionic components related to specific techniques, are evaluated. Strict environmental control during measurement is highlighted due to perovskite’s sensitivity to external factors such as humidity, light, electric field, and heat.</p></div>","PeriodicalId":343,"journal":{"name":"Joule","volume":null,"pages":null},"PeriodicalIF":38.6000,"publicationDate":"2024-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Toolsets for assessing ionic migration in halide perovskites\",\"authors\":\"Natalia Yantara , Nripan Mathews\",\"doi\":\"10.1016/j.joule.2024.02.022\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Halide perovskites, known for their tunable and exceptional optoelectronic properties, have been extensively explored for photovoltaics, light-emitting diodes, photodetectors, and memristors. With solar cell efficiencies closing on theoretical limits, stabilization of perovskite devices—especially via control of the ionic activity within the device—is a research gap that needs to be addressed before its commercialization. Solar cell stability is directly linked to ionic defects, and their effective passivation is essential for curbing ionic migration and associated deleterious effects. However, techniques to quantify and directly observe ionic migration are limited by the soft ionic lattice nature of the perovskite as well as its mixed ionic-electronic conductivity. This review examines both theoretical and experimental approaches to understand intrinsic and extrinsic ionic motion in halide perovskites at the material and device level. In addition to elemental and molecular analysis techniques that directly identify the ion in motion, spectroscopy techniques that measure properties associated with local stoichiometry changes have also been deployed. Measurement artifacts, strategies to mitigate their occurrence, as well as ways to differentiate electronic and ionic components related to specific techniques, are evaluated. Strict environmental control during measurement is highlighted due to perovskite’s sensitivity to external factors such as humidity, light, electric field, and heat.</p></div>\",\"PeriodicalId\":343,\"journal\":{\"name\":\"Joule\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":38.6000,\"publicationDate\":\"2024-05-15\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Joule\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S2542435124001065\",\"RegionNum\":1,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Joule","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2542435124001065","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Toolsets for assessing ionic migration in halide perovskites
Halide perovskites, known for their tunable and exceptional optoelectronic properties, have been extensively explored for photovoltaics, light-emitting diodes, photodetectors, and memristors. With solar cell efficiencies closing on theoretical limits, stabilization of perovskite devices—especially via control of the ionic activity within the device—is a research gap that needs to be addressed before its commercialization. Solar cell stability is directly linked to ionic defects, and their effective passivation is essential for curbing ionic migration and associated deleterious effects. However, techniques to quantify and directly observe ionic migration are limited by the soft ionic lattice nature of the perovskite as well as its mixed ionic-electronic conductivity. This review examines both theoretical and experimental approaches to understand intrinsic and extrinsic ionic motion in halide perovskites at the material and device level. In addition to elemental and molecular analysis techniques that directly identify the ion in motion, spectroscopy techniques that measure properties associated with local stoichiometry changes have also been deployed. Measurement artifacts, strategies to mitigate their occurrence, as well as ways to differentiate electronic and ionic components related to specific techniques, are evaluated. Strict environmental control during measurement is highlighted due to perovskite’s sensitivity to external factors such as humidity, light, electric field, and heat.
期刊介绍:
Joule is a sister journal to Cell that focuses on research, analysis, and ideas related to sustainable energy. It aims to address the global challenge of the need for more sustainable energy solutions. Joule is a forward-looking journal that bridges disciplines and scales of energy research. It connects researchers and analysts working on scientific, technical, economic, policy, and social challenges related to sustainable energy. The journal covers a wide range of energy research, from fundamental laboratory studies on energy conversion and storage to global-level analysis. Joule aims to highlight and amplify the implications, challenges, and opportunities of novel energy research for different groups in the field.