{"title":"变静水压力下的光致发光-拉曼/红外光谱研究卤化铅钙钛矿中发光中心的来源","authors":"Tao Chen, Chong Wang, J. Bao","doi":"10.1109/NMDC50713.2021.9677500","DOIUrl":null,"url":null,"abstract":"Organic-inorganic lead halide perovskites have provided us not only a long-awaited material platform to realize the dream of high-efficiency solar cells and many other optoelectronic devices, but also a wide range of structures to explore unusual fundamental sciences. Because of their extremely high quantum efficiency, light-emitting diodes (LEDs) and lasers are becoming important applications of perovskites. Among them, several low-dimensional perovskites or related materials have attracted more attention due to either controversial luminescence mechanism or peculiar edge emission. In this talk, I will first discuss these controversies and challenges to resolve them, I will then introduce our recently developed techniques to resolve the controversies and identify the origin of luminescent centers. Specifically, same-spot photoluminescence (PL) -Raman/IR is firstly used as an effective strategy to correlate PL to the structure in a direct one-to-one relationship, pressure-dependent PL-Raman is then developed as a dynamic probe to excludes point defects as a possible mechanism.","PeriodicalId":6742,"journal":{"name":"2021 IEEE 16th Nanotechnology Materials and Devices Conference (NMDC)","volume":"41 1","pages":"1-5"},"PeriodicalIF":0.0000,"publicationDate":"2021-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Photoluminescence-Raman/FTIR under Variable Hydrostatic Pressure to Reveal the Origin of Luminescent Centers in Lead Halide Perovskites\",\"authors\":\"Tao Chen, Chong Wang, J. Bao\",\"doi\":\"10.1109/NMDC50713.2021.9677500\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Organic-inorganic lead halide perovskites have provided us not only a long-awaited material platform to realize the dream of high-efficiency solar cells and many other optoelectronic devices, but also a wide range of structures to explore unusual fundamental sciences. Because of their extremely high quantum efficiency, light-emitting diodes (LEDs) and lasers are becoming important applications of perovskites. Among them, several low-dimensional perovskites or related materials have attracted more attention due to either controversial luminescence mechanism or peculiar edge emission. In this talk, I will first discuss these controversies and challenges to resolve them, I will then introduce our recently developed techniques to resolve the controversies and identify the origin of luminescent centers. Specifically, same-spot photoluminescence (PL) -Raman/IR is firstly used as an effective strategy to correlate PL to the structure in a direct one-to-one relationship, pressure-dependent PL-Raman is then developed as a dynamic probe to excludes point defects as a possible mechanism.\",\"PeriodicalId\":6742,\"journal\":{\"name\":\"2021 IEEE 16th Nanotechnology Materials and Devices Conference (NMDC)\",\"volume\":\"41 1\",\"pages\":\"1-5\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2021-12-12\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2021 IEEE 16th Nanotechnology Materials and Devices Conference (NMDC)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/NMDC50713.2021.9677500\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2021 IEEE 16th Nanotechnology Materials and Devices Conference (NMDC)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/NMDC50713.2021.9677500","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Photoluminescence-Raman/FTIR under Variable Hydrostatic Pressure to Reveal the Origin of Luminescent Centers in Lead Halide Perovskites
Organic-inorganic lead halide perovskites have provided us not only a long-awaited material platform to realize the dream of high-efficiency solar cells and many other optoelectronic devices, but also a wide range of structures to explore unusual fundamental sciences. Because of their extremely high quantum efficiency, light-emitting diodes (LEDs) and lasers are becoming important applications of perovskites. Among them, several low-dimensional perovskites or related materials have attracted more attention due to either controversial luminescence mechanism or peculiar edge emission. In this talk, I will first discuss these controversies and challenges to resolve them, I will then introduce our recently developed techniques to resolve the controversies and identify the origin of luminescent centers. Specifically, same-spot photoluminescence (PL) -Raman/IR is firstly used as an effective strategy to correlate PL to the structure in a direct one-to-one relationship, pressure-dependent PL-Raman is then developed as a dynamic probe to excludes point defects as a possible mechanism.