Highly stable and spectrum-selective ultraviolet photodetectors based on lead-free copper-based perovskites

Li, Ying; Shi, Zhifeng; Liang, Wenqing; Wang, Lintao; Li, Sen; Zhang, Fei; Ma, Zhuangzhuang; Wang, Yue; Tian, Yongzhi; Wu, Di; Li, Xinjian; Zhang, Yuantao; Shan, Chongxin; Fang, Xiaosheng

doi:10.1039/c9mh01371g

Cited by 170 publications

(141 citation statements)

References 69 publications

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“…Similarly, all-inorganic lead-free Cs 3 Cu 2 I 5 /GaN heterojunctions were reported by Li et al for UV photodetection, and the devices based on the p-n junction can function without external power supply. [301] Because of the sharp absorption edge and surfacecharge recombination, the PDs can further achieve spectrumselective narrowband UV photodetection (Figure 13b,c). Zhang et al reported a dual-color self-powered PD based on SnO 2 micro-and millimeter wires decorated with CsPbBr 3 particles.…”

Section: Self-powered Pdsmentioning

confidence: 99%

Low‐Dimensional Metal Halide Perovskite Photodetectors

et al. 2020

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Metal halide perovskites (MHPs) have been a hot research topic due to their facile synthesis, excellent optical and optoelectronic properties, and record‐breaking efficiency of corresponding optoelectronic devices. Nowadays, the development of miniaturized high‐performance photodetectors (PDs) has been fueling the demand for novel photoactive materials, among which low‐dimensional MHPs have attracted burgeoning research interest. In this report, the synthesis, properties, photodetection performance, and stability of low‐dimensional MHPs, including 0D, 1D, 2D layered and nonlayered nanostructures, as well as their heterostructures are reviewed. Recent advances in the synthesis approaches of low‐dimensional MHPs are summarized and the key concepts for understanding the optical and optoelectronic properties related to the PD applications of low‐dimensional MHPs are introduced. More importantly, recent progress in novel PDs based on low‐dimensional MHPs is presented, and strategies for improving the performance and stability of perovskite PDs are highlighted. By discussing recent advances, strategies, and existing challenges, this progress report provides perspectives on low‐dimensional MHP‐based PDs in the future.

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Section: Self-powered Pdsmentioning

confidence: 99%

Low‐Dimensional Metal Halide Perovskite Photodetectors

et al. 2020

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“…All‐inorganic 0D perovskite Cs 3 Cu 2 I 5 was recently reported as a highly efficient blue‐emitting material with a PLQY of 91.2%, and regarded as promising for application in photodetectors, light‐emitting diodes, and memristors afterward. [ 14–17 ] In 2020, Cs 3 Cu 2 I 5 nanocrystals were developed for X‐ray imaging with a light yield of 80 000 photons MeV −1 . [ 18 ] To the best of our knowledge, the X‐ray and γ‐ray detection capability of bulk Cs 3 Cu 2 I 5 single crystal has not been reported.…”

Section: Figurementioning

confidence: 99%

“…The bandgap is estimated to be 3.77 eV (329 nm) based on the onset of optical absorption edge, which is close to that of 3.8 eV (326 nm) reported for Cs 3 Cu 2 I 5 films. [ 14,15 ] The PLE and PL spectra of Cs 3 Cu 2 I 5 have broad excitation and emission bands peaking at 320 and 440 nm, respectively. The PLE and PL spectra have no overlaps due to the large Stokes shift of 120 nm (1.06 eV).…”

Section: Figurementioning

confidence: 99%

Zero‐Dimensional Cs₃Cu₂I₅ Perovskite Single Crystal as Sensitive X‐Ray and γ‐Ray Scintillator

Cheng

Beitlerová

Kučerková

et al. 2020

Physica Rapid Research Ltrs

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Organic-inorganic hybrid halide perovskites, represented by CH 3 NH 3 PbX 3 (X ¼ Cl, Br, I), have demonstrated excellent optoelectronic and radiation detection properties. [1-3] All-inorganic CsPbX 3 perovskites (X ¼ Cl, Br, I) with better long-term stability are also considered as promising materials for optoelectronic devices and semiconductor γ-ray detectors. [4-6] Recently, there has been a surge of interest in low-dimensional perovskites due to their high photoluminescence quantum yield (PLQY). For example, the crystal structure of Cs 4 PbBr 6 that consist of spatially isolated [PbBr 6 ] 4À octahedra surrounding with Cs þ ions can be regarded as a 0D structure at molecular level, which leads to an intense quantum confinement effect. Excitons are strongly confined at each [PbBr 6 ] 4À octahedron, enabling a high exciton binding energy of 353 meV and a high PLQY of between 42% and 45%. [7,8] Quite a few low-dimensional allinorganic perovskites with remarkable luminescent properties were also reported as sensitive and efficient scintillators. Bulk crystals of 0D Cs 4 CaI 6 :Eu, Cs 4 SrI 6 :Eu, and Cs 4 EuBr 6 perovskites, isostructural to K 4 CdCl 6 trigonal system, have excellent light yields from 51 800 to 78 000 photons MeV À1 and energy resolutions from 3.3% to 4.3% at 662 keV. [9,10] However, due to a small Stokes shift of Eu 2þ ions, these materials suffer from strong self-absorption effect when scaling-up crystal size. Nanocrystals of 0D CsPbBr 3 /Cs 4 PbBr 6 perovskites show a high light yield of 64 000 photons MeV À1 and a fast decay time of <10 ns. [11] Onedimensional materials were also reported as sensitive X-ray scintillators, such as Rb 2 CuBr 3 and Rb 2 CuCl 3. [12,13] In particular, the Rb 2 CuBr 3 , that is self-absorption free and nonhygroscopic, was reported to achieve an ultrahigh scintillation yield of 90 000 photons MeV À1. [12] All-inorganic 0D perovskite Cs 3 Cu 2 I 5 was recently reported as a highly efficient blue-emitting material with a PLQY of 91.2%, and regarded as promising for application in photodetectors, light-emitting diodes, and memristors afterward. [14-17] In 2020, Cs 3 Cu 2 I 5 nanocrystals were developed for X-ray imaging with a light yield of 80 000 photons MeV À1. [18] To the best of our knowledge, the X-ray and γ-ray detection capability of bulk Cs 3 Cu 2 I 5 single crystal has not been reported. Thus, the aim of this work is to study the physical and optical properties and the scintillation performance under X-ray and γ-ray radiation of high-quality Cs 3 Cu 2 I 5 perovskite single crystal grown by the Bridgman method. The 7 mm diameter single crystal of Cs 3 Cu 2 I 5 was grown by the vertical Bridgman method. High-purity powders of CsI (99.99%, Grirem Advanced Materials) and CuI (99.999%, Sigma-Aldrich) were used as raw materials. These starting materials were mixed consistent with stoichiometric ratio and loaded into a quartz ampoule in a glovebox with <0.1 ppm moisture and oxygen. The loaded ampoule was sealed under a vacuum of 10 À6 torr after drying at 180 C for ...

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“…constructed a Cs 3 Cu 2 I 5 /GaN heterojunction structured photodetector by spin‐coating Cs 3 Cu 2 I 5 on a commercially available n‐GaN substrate. [ 75 ] Through adjusting the thickness of the film, the optimal device demonstrated a high responsivity of 0.28 A W –1 and a large detectivity of 1.4 × 10 12 Jones. Liang et al.…”

Section: Mi‐based Halide Perovskite Photodetectormentioning

confidence: 99%

Progress of Lead‐Free Halide Perovskites: From Material Synthesis to Photodetector Application

Cao

2020

Adv Funct Materials

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Lead halide perovskite (LHP) has been widely researched in the photovoltaic field due to its highly attractive optoelectronic properties. Among the LHP‐based devices, the detectivity of the photodetector is as high as 1015 Jones. However, their practical application is limited by the toxicity of lead in perovskite and the inherent instability induced by the perovskite structure against moisture, heat, and light. To address these issues, tremendous efforts have been made to replace Pb2+ with other environmentally friendly metal cations such as Sn2+, Bi3+, Cu2+, Sb3+, and Ge2+. Thus, considerable breakthroughs in device performance and stability using lead‐free metal halide perovskite (LFMHP) have been made in recent years. In this review, the synthesis methods and strategies are focused for enhancing the material quality and photoelectric properties of LFMHPs and the recent research progress of LFMHP‐based photodetectors is summarized. This research provides some promising perspectives for high‐performance LFMHP photodetectors to achieve a broader range of practical applications in the future.

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Highly stable and spectrum-selective ultraviolet photodetectors based on lead-free copper-based perovskites

Abstract: We demonstrated a stable and spectrum-selective self-powered UV photodetector based on lead-free Cs3Cu2I5 films with excellent photodetection performance.

Cited by 170 publications

References 69 publications

Low‐Dimensional Metal Halide Perovskite Photodetectors

Low‐Dimensional Metal Halide Perovskite Photodetectors

Zero‐Dimensional Cs₃Cu₂I₅ Perovskite Single Crystal as Sensitive X‐Ray and γ‐Ray Scintillator

Progress of Lead‐Free Halide Perovskites: From Material Synthesis to Photodetector Application

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Highly stable and spectrum-selective ultraviolet photodetectors based on lead-free copper-based perovskites

Abstract: We demonstrated a stable and spectrum-selective self-powered UV photodetector based on lead-free Cs3Cu2I5 films with excellent photodetection performance.

Cited by 170 publications

References 69 publications

Low‐Dimensional Metal Halide Perovskite Photodetectors

Low‐Dimensional Metal Halide Perovskite Photodetectors

Zero‐Dimensional Cs3Cu2I5 Perovskite Single Crystal as Sensitive X‐Ray and γ‐Ray Scintillator

Progress of Lead‐Free Halide Perovskites: From Material Synthesis to Photodetector Application

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Zero‐Dimensional Cs₃Cu₂I₅ Perovskite Single Crystal as Sensitive X‐Ray and γ‐Ray Scintillator