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Unlocking the Potential of Halide Perovskites Through Doping 被引量:1
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作者 Chenlu He Jian Qiu +1 位作者 Zhen Mu Xiaogang Liu 《CCS Chemistry》 CSCD 2023年第9期1961-1972,共12页
Halide perovskites have become a hot topic in materials research due to their potential applications in a variety of fields,from optoelectronic and thermoelectric devices to solar cells.Doping of halide perovskites ca... Halide perovskites have become a hot topic in materials research due to their potential applications in a variety of fields,from optoelectronic and thermoelectric devices to solar cells.Doping of halide perovskites can be achieved by introducing different types of dopants,such as metal cations,anions,and organic molecules,leading to increased stability and improved optoelectronic properties.Moreover,doping can introduce new functionalities,such as increased spin lifetime and thermal stability.These features make doped halide perovskites a highly promising candidate for optoelectronic applications.In this mini-review,we highlight the latest advances in ion-doped halide perovskites and their immense potential for various applications. 展开更多
关键词 doped halide perovskites bandgap tuning crystallinity optimization defect passivation spin-state regulation chiral perovskites perovskite scintillators
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X-ray imager of 26-μm resolution achieved by perovskite assembly 被引量:1
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作者 Zhaofen Wang Ruijia Sun +5 位作者 Nianqiao Liu Huailin Fan Xun Hu Depeng Shen Yuhai Zhang Hong Liu 《Nano Research》 SCIE EI CSCD 2022年第3期2399-2404,共6页
Spatial resolution is an important criterion to evaluate the performance of a scintillation screen for X-ray imaging.Perovskite-based X-ray screen,usually made of powders or polycrystalline films,suffers from low spat... Spatial resolution is an important criterion to evaluate the performance of a scintillation screen for X-ray imaging.Perovskite-based X-ray screen,usually made of powders or polycrystalline films,suffers from low spatial resolution(~200μm)due to the large thickness of scintillation layer despite of their compelling sensitivity to X-ray dose.In this work,a concentrated colloid of CsPbBr_(3)nanosheets was synthesized via a co-precipitation method at ambient condition.By drop casting,smooth scintillation screens of varied thickness were formed through self-assembly,which exhibited both high internal and external photoluminescence quantum yield(PL QY)(84.5%and 75.1%,respectively).The screen-based X-ray detector showed a high sensitivity down to 27 nGy/s,two orders of magnitude lower than the regular dose for medical diagnostics.Importantly,the screen of optimal thickness of 15μm showcased an unprecedented spatial resolution(26μm)when used for X-ray radiography,representing one order of magnitude improvement in perovskite community. 展开更多
关键词 perovskite scintillator high-resolution X-ray imaging SELF-ASSEMBLY perovskite nanosheets all-inorganic perovskite
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