Crystallographically Aligned Perovskite Structures for High‐Performance Polarization‐Sensitive Photodetectors

Feng, Jiangang; Yan, Xiaoxu; Liu, Yun; Gao, Hanfei; Wu, Yuchen; Su, Bin; Jiang, Lei

doi:10.1002/adma.201605993

Cited by 213 publications

(252 citation statements)

References 41 publications

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“…Moreover, this value is comparable to the reported high‐quality MAPbCl 3 ( n traps = 3.1 × 10 10 cm −3 ), MAPbBr 3 ( n traps = 3.0 × 10 10 cm −3 ) and MAPbI 3 ( n traps = 3.3 × 10 10 cm −3 ) . Such low trap density of EMA will promote charge‐carrier transport during laser on/off cycle procedure, which greatly helps to achieve ultrafast responding speed . Meanwhile, at high voltages above 28 V, the I‐V exhibits a trace of quadratic dependence ( I∝V 2 ).…”

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confidence: 76%

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Exploring a Polar Two‐dimensional Multi‐layered Hybrid Perovskite of (C₅H₁₁NH₃)₂(CH₃NH₃)Pb₂I₇ for Ultrafast‐Responding Photodetection

Han

Wang

Zhang

et al. 2018

Laser & Photonics Reviews

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Although organic‐inorganic hybrid perovskites demonstrate promising potentials for photodetection, one great challenge still to be addressed is their relatively low responding speed (often at the magnitude order of ∼ms). Herein, a solution‐processed photodetector based on polar two‐dimensional (2D) multilayered hybrid perovskite crystal is fabricated, (C5H11NH3)2(CH3NH3)Pb2I7 (EMA, where C5H11NH3+ is n‐pentylaminium), which exhibits an ultrafast responding time of ≈1.52 μs. This figure‐of‐merit is faster at least by 2–4 orders than other reported 2D organic‐inorganic hybrid perovskite photodetectors. To the best of knowledge, this is the record‐fast response‐speed for lateral‐type devices of 2D organic‐inorganic hybrid perovskite. Such ultrafast responding can be attributed to the high crystallinity and quite low density of defects and traps. In addition, this device also presents a high photocurrent on/off ratio (>103) and extremely low dark current (≈10−10 A), indicating its potential applications for high‐efficiency photodetectors. Our results pave the pathway toward ultrafast responding photodetection of 2D organic‐inorganic hybrid perovskites.

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confidence: 76%

“…To the best of our knowledge, this is the record‐fast response speed reported for the lateral‐type photodetectors based on 2D layered OIHPs (see ). Such ultrafast responding might be attributed to the quite low density of defects and traps of the high quality EMA single crystals, which greatly favor charge‐carrier transportation …”

mentioning

confidence: 99%

Exploring a Polar Two‐dimensional Multi‐layered Hybrid Perovskite of (C₅H₁₁NH₃)₂(CH₃NH₃)Pb₂I₇ for Ultrafast‐Responding Photodetection

Han

Wang

Zhang

et al. 2018

Laser & Photonics Reviews

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“…Although both the broadband and narrowband photodetectors have already achieved high performance, these photodetectors can exclusively operate under single spectral response model and consequently exhibit single response spectrum, limiting their broader applications. Realizing highly sensitive multifunctional photodetectors with tunable spectral response ability would meet the need of versatility in practical application …”

Section: Research Trends On Pm Type Opdsmentioning

confidence: 99%

Recent Progress on Photomultiplication Type Organic Photodetectors

Miao

Zhang

2018

Laser & Photonics Reviews

210

182

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Photodetectors as a significant unit of intelligent optoelectronic systems have stimulated immense attention from multidisciplinary areas. Photomultiplication (PM) is desirable for sensitive photodetectors with strong detection capability of weak light, which can further simplify the photo‐detection systems without pre‐amplifier circuit. For organic photodetectors (OPDs), PM phenomenon cannot be realized by utilizing the principle of avalanche effect or impact ionization as in inorganic materials, stemming from organic semiconductor materials with large exciton binding energy and disordered structure. In this review, the recent progress on PM type OPDs is comprehensively summarized from the perspective of device physics and material science. Charge tunneling injection induced by interfacial traps becomes the mainstream working mechanism for obtaining PM phenomenon. A series of PM type OPDs was achieved by utilizing interfacial blocking layer and introducing trap states into active layer or interfacial layer. The filter‐free PM type narrowband OPDs are realized by combining the concept of charge injection narrowing with the mechanism of PM. Meanwhile, further development on this hot topic is proposed and fully discussed, including multifunctional OPDs, organic–inorganic hybrid photodetectors, and photodetector systems.

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“…A device that can convert optical signal into electrical signal is called a photodetector. It has a wide range of applications in the field of optical communication, image sensing, and chemical/biological monitoring . However, the traditional photodetectors based on silicon (Si) and III‐V compound semiconductors, mainly rely on expensive, slow, complicated processes, such as metal‐organic chemical vapor deposition (MOCVD) and molecular‐beam epitaxy (MBE), which are unable to achieve low cost, large area, flexible solution production.…”

Section: Introductionmentioning

confidence: 99%

Recent advances on organic‐inorganic hybrid perovskite photodetectors with fast response

Yan

Shen

2019

InfoMat

101

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In the last decade, optoelectronic devices based on organic‐inorganic hybrid perovskite (OIHP) materials, which have unique advantages of direct bandgap, large absorption coefficient, low density of defects, long charge carrier lifetime, diffusion length, and solution processability, have traveled with traditional inorganic semiconductor devices. The state‐of‐the‐art OIHP photodetectors have contributed a comparable performance with Si and III‐V compound semiconductor based photodetectors. Large amount of efforts have been focused on improving sensitivity, broadening detection spectra, enlarging linear dynamic range. However, few reports emphasized the important parameter of response speed. In this review, we summarize the progress and applications of OIHP photodetectors with fast response. Based on photovoltaic and photoconductive‐type OIHP photodetectors, the working principle and key factors on determining response speed are systematically mentioned. Then, the research progress of response speed, which is composed of resistance‐capacitance (RC) time constant and charge carrier transit time is discussed in detail. Subsequently, considering the intrinsic flexibility of perovskite materials, we briefly discuss the flexible photodetectors. Finally, an outlook and potential rules for designing fast‐response OIHP photodetectors are further proposed.

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Crystallographically Aligned Perovskite Structures for High‐Performance Polarization‐Sensitive Photodetectors

Cited by 213 publications

References 41 publications

Exploring a Polar Two‐dimensional Multi‐layered Hybrid Perovskite of (C₅H₁₁NH₃)₂(CH₃NH₃)Pb₂I₇ for Ultrafast‐Responding Photodetection

Exploring a Polar Two‐dimensional Multi‐layered Hybrid Perovskite of (C₅H₁₁NH₃)₂(CH₃NH₃)Pb₂I₇ for Ultrafast‐Responding Photodetection

Recent Progress on Photomultiplication Type Organic Photodetectors

Recent advances on organic‐inorganic hybrid perovskite photodetectors with fast response

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Crystallographically Aligned Perovskite Structures for High‐Performance Polarization‐Sensitive Photodetectors

Cited by 213 publications

References 41 publications

Exploring a Polar Two‐dimensional Multi‐layered Hybrid Perovskite of (C5H11NH3)2(CH3NH3)Pb2I7 for Ultrafast‐Responding Photodetection

Exploring a Polar Two‐dimensional Multi‐layered Hybrid Perovskite of (C5H11NH3)2(CH3NH3)Pb2I7 for Ultrafast‐Responding Photodetection

Recent Progress on Photomultiplication Type Organic Photodetectors

Recent advances on organic‐inorganic hybrid perovskite photodetectors with fast response

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Product

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Exploring a Polar Two‐dimensional Multi‐layered Hybrid Perovskite of (C₅H₁₁NH₃)₂(CH₃NH₃)Pb₂I₇ for Ultrafast‐Responding Photodetection

Exploring a Polar Two‐dimensional Multi‐layered Hybrid Perovskite of (C₅H₁₁NH₃)₂(CH₃NH₃)Pb₂I₇ for Ultrafast‐Responding Photodetection