High-quality inorganic–organic perovskite CH3NH3PbI3 single crystals for photo-detector applications

Ding, Jianxu; Du, Songjie; Zhao, Ying; Zhang, Xiaojun; Zuo, Zhiyuan; Cui, Hongzhi; Zhan, Xiaoli; Gu, Yi-Jie; Sun, Haiqing

doi:10.1007/s10853-016-0329-2

Cited by 69 publications

(41 citation statements)

References 27 publications

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“…[11,12] Owing to their exciting photovoltaic applications, their promising potential in photodetection is drawing growing interest. [13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29] Yang and co-workers first fabricated a vertical perovskite photodetector, [13] which demonstrated excellent light detecting capability. Lateral photodetectors are easy to make, and more importantly, their intrinsic gain mechanism can lead to very high photosensitivity.…”

mentioning

confidence: 99%

TiO₂ Nanocrystal/Perovskite Bilayer for High‐Performance Photodetectors

Ren

Chen

et al. 2017

Adv Elect Materials

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long carrier diffusion lengths, [9,10] and low deep-state defects. [11,12] Owing to their exciting photovoltaic applications, their promising potential in photodetection is drawing growing interest. [13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29] Yang and co-workers first fabricated a vertical perovskite photodetector, [13] which demonstrated excellent light detecting capability. Lateral photodetectors are easy to make, and more importantly, their intrinsic gain mechanism can lead to very high photosensitivity. [30] Thereby many efforts have been devoted to developing such lateral devices. For single-layer perovskite devices reported, [14][15][16][17] relatively high detectivity (≈10 12 Jones) and short rise/decay time (dozens of milliseconds) were realized, but this is always associated with low on/ off ratios and poor electrical instabilities (induced by ion migration). To meet such challenge, bilayer devices are designed: perovskite film responsible for light absorption and another material film responsible for carriers transport. Significant enhancement in photoresponsivity has been achieved. [18][19][20][21][22][23][24] However, the reported bilayer devices usually employed high-conductive 2D layer to function as main photocarrier transport channel, and this leads to certain detrimental defects. For example, the graphene/perovskite bilayer devices exhibit very low on/off ratio of smaller than 2, [18][19][20][21] and the transition metal sulfides (WS 2 , MoS 2 )/perovskite bilayer devices have very long rise/decay time of a few seconds. [22,23] Also, it should be noted that graphene and the transition metal sulfides are usually deposited by complex and costly process, such as chemical vapor deposition, mechanical exfoliation, and hence is not suitable for large-area fabrication. Solutionprocessed MoS 2 [24] or organic [25,26] /CH 3 CH 3 PbI 3 photodetectors have been fabricated, but their performances are still limited by low on/off ratios of <500. Here we employed TiO 2 nanocrystal (NC) film to transport photocarrier. The designed TiO 2 NC/perovskite bilayer photodetector exhibits high overall performance with on/off ratio of 4000, photodetectivity of 1.85 × 10 12 Jones, and rise/decay time of 0.49/0.56 s. Figure 1a presents the schematic structure of the TiO 2 NC/ perovskite bilayer photodetector fabricated on a glass substrate. First, the TiO 2 NC film was spin coated on the glass substrate, and then Al electrodes were thermally evaporated on the TiO 2 NC film with help of an interdigital mask, resulting in a channel length of 80 µm and a channel width of 8800 µm. The perovskite film (CH 3 NH 3 PbI 3 ) was then spin coated on the TiO 2 NC film, completing the device fabrication (details Owing to their attractive performance in photovoltaic devices, organolead halide perovskite materials have attracted enormous interest for photodetector applications. However, current perovskite-based photodetectors mainly rely on high-conductive 2D materials such as graphene or transition metal sulfi...

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confidence: 99%

TiO₂ Nanocrystal/Perovskite Bilayer for High‐Performance Photodetectors

Ren

Chen

et al. 2017

Adv Elect Materials

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“…While α-CsPbI 3 and α-FAPbI 3 were successfully stabilized with surface ligand functionalization and achieved good photovoltaic performance on solar cells, we believe these nanostructures will find major applications as optoelectronics in the future, such as light-emitting diodes, photodetectors and lasers, due to their tunable material bandgaps, as already achieved in works [168][169][170][171][172][173][174][175][176][177] . Additionally, according to the anion exchange reactions that were previously practiced to grow perovskite nanostructures [178,179] , it is potentially viable to synthesize lead-free perovskites through cation exchanges.…”

Section: Conclusion and Future Research Directionsmentioning

confidence: 83%

Cation engineering on lead iodide perovskites for stable and high-performance photovoltaic applications

Gong

Guo

Benjamin

et al. 2018

Journal of Energy Chemistry

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“…The intensities of emission peaks of 2 are slightly larger than that of 1. The broad emission spectra (from 400 nm to 650 nm for both 1 and 2) suggest that near-edge defect levels related to surface states take important part in the emission process [36].…”

Section: Optical Propertiesmentioning

confidence: 96%

Growth and Property Investigations of Two Organic–Inorganic Hybrid Molecular Crystals with High Thermal Stability: 4-Iodoanilinium perchlorate 18-crown-6 and 4-Iodoanilinium Borofluorate 18-crown-6

et al. 2019

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Two new organic–inorganic hybrid molecular single crystals, 4-Iodoanilinium perchlorate 18-crown-6 (1) and 4-Iodoanilinium borofluorate 18-crown-6 (2), with large sizes and high thermal stability were successfully synthesized by solution method. Their structures, phase purities, thermal stability, dielectric, absorption and fluorescence spectra were systematically investigated for potential applications. Compounds 1 and 2 crystallize in orthorhombic crystal system, in same space group, namely Pnma. The thermal measurements shown 1 and 2 maintain high thermal stability up to 150 °C. The temperature dependency of dielectric constant was studied, and no distinct anomaly was observed. The band gap were calculated to be 3.38 eV and 3.57 eV for 1 and 2, respectively, slightly smaller than those of layer perovskite (benzylammonium)2PbCl4 semiconducting materials, which have potential applications in optoelectronic detection field. The investigations throw light on the semiconductor properties of organic–inorganic hybrid crown type material and provide two types of crown compounds with high thermal stability.

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High-quality inorganic–organic perovskite CH3NH3PbI3 single crystals for photo-detector applications

Cited by 69 publications

References 27 publications

TiO₂ Nanocrystal/Perovskite Bilayer for High‐Performance Photodetectors

TiO₂ Nanocrystal/Perovskite Bilayer for High‐Performance Photodetectors

Cation engineering on lead iodide perovskites for stable and high-performance photovoltaic applications

Growth and Property Investigations of Two Organic–Inorganic Hybrid Molecular Crystals with High Thermal Stability: 4-Iodoanilinium perchlorate 18-crown-6 and 4-Iodoanilinium Borofluorate 18-crown-6

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High-quality inorganic–organic perovskite CH3NH3PbI3 single crystals for photo-detector applications

Cited by 69 publications

References 27 publications

TiO2 Nanocrystal/Perovskite Bilayer for High‐Performance Photodetectors

TiO2 Nanocrystal/Perovskite Bilayer for High‐Performance Photodetectors

Cation engineering on lead iodide perovskites for stable and high-performance photovoltaic applications

Growth and Property Investigations of Two Organic–Inorganic Hybrid Molecular Crystals with High Thermal Stability: 4-Iodoanilinium perchlorate 18-crown-6 and 4-Iodoanilinium Borofluorate 18-crown-6

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TiO₂ Nanocrystal/Perovskite Bilayer for High‐Performance Photodetectors

TiO₂ Nanocrystal/Perovskite Bilayer for High‐Performance Photodetectors