Flexible Photodetectors Based on Novel Functional Materials

Xie, Chao; Yan, Feng

doi:10.1002/smll.201701822

Cited by 288 publications

(247 citation statements)

References 257 publications

(496 reference statements)

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“…[23,24] The facile solution-based preparation method enables our self-driven photodetectors to be assembled on plastic substrates. [23,24] The facile solution-based preparation method enables our self-driven photodetectors to be assembled on plastic substrates.…”

Section: Resultsmentioning

confidence: 99%

Asymmetric Contact‐Induced Self‐Driven Perovskite‐Microwire‐Array Photodetectors

Peng

Fang

et al. 2019

Adv Elect Materials

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Combining both 1D geometry and the features of hybrid perovskite materials, perovskite micro/nanowires have recently attracted particular attention for a variety of optoelectronic device applications. Herein, by taking advantage of the strong built‐in potential induced by asymmetric contact with varied work functions, highly sensitive visible photodetectors based on a CH3NH3PbI3 microwire array that display pronounced photovoltaic activities are reported. These photodetectors afford the capability to work without an external power supply. A representative detector with Au/Ag electrodes achieves a reasonable responsivity of 161.1 mA W−1 with a fast response speed of 13.8/16.1 µs under 520 nm illumination at zero bias. In addition, such a device is also characterized by an ultralow dark current of tens of femtoamps, enabling a high specific detectivity of 1.3 × 1012 Jones. Furthermore, a flexible photodetector is successfully prepared, which shows comparable photoresponse performance and outstanding flexibility and bending durability. Given the good device performance and simple device geometry, the present self‐driven photodetectors hold great promise for future highly sensitive and low‐energy‐consumption photodetection systems.

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Section: Resultsmentioning

confidence: 99%

Asymmetric Contact‐Induced Self‐Driven Perovskite‐Microwire‐Array Photodetectors

Peng

Fang

et al. 2019

Adv Elect Materials

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“…It can be observed in Figure S5 in the Supporting Information that the experimental results can be fitted very well with the function. [48] Considering that the FASnI 3 perovskite film is thin and flexible, FASnI 3 PDs were prepared on 50 µm thick polyimide (PI) substrates. The faster response time for a thinner film can be attributed to the higher carrier density in the film.…”

Section: Doi: 101002/advs201900751mentioning

confidence: 99%

Sn‐Based Perovskite for Highly Sensitive Photodetectors

et al. 2019

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Organic–inorganic hybrid perovskites have emerged as promising functional materials for high‐performance photodetectors. However, the toxicity of Pb and the lack of internal gain mechanism in typical perovskites significantly hinder their practical applications. Herein, a low‐voltage and high‐performance photodetector based on a single layer of lead‐free Sn‐based perovskite film is reported. The device shows broadband response from ultraviolet to near‐infrared light with a responsivity up to 10 5 A W −1 and a high gain at a low operating voltage. The outstanding performance is attributed to the high hole mobility, p‐doping nature, and excellent optoelectronic properties of the Sn‐based perovskite. Moreover, the device is assembled on a flexible substrate and demonstrates both high sensitivity and good bending stability. This work demonstrates a route for realizing nontoxic, low‐cost, and high‐performance perovskite photodetectors with a simple device structure.

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“…For more than a decade, 2D materials have arisen as a unique and promising material family toward the next‐generation electronic and optoelectronic devices in consideration of their appealing physical and physicochemical properties . For instance, the atomically thin feature of 2D materials enables high mechanical flexibility and transparency, which offers an opportunity for flexible and bendable detectors . Their naturally passivated surfaces without dangling bonds make it easy to seamlessly integrate on any substrates .…”

Section: Introductionmentioning

confidence: 99%

2D Metal Chalcogenides for IR Photodetection

Wang

Zhang

Gao

et al. 2019

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Infrared (IR) photodetectors are finding diverse applications in imaging, information communication, military, etc. 2D metal chalcogenides (2DMCs) have attracted increasing interest in view of their unique structures and extraordinary physical properties. They have demonstrated outstanding IR detection performance including high responsivity and detectivity, high on/off ratio, fast response rate, stable room temperature operability, and good mechanical flexibility, which has opened up a new prospect in next‐generation IR photodetectors. This Review presents a comprehensive summary of recent progress in advanced IR photodetectors based on 2DMCs. The rationale of the photodetectors containing photocurrent generation mechanisms and performance parameters are briefly introduced. The device performances of 2DMCs‐based IR photodetectors are also systematically summarized, and some representative achievements are highlighted as well. Finally, conclusions and outlooks are delivered as a guideline for this thriving field.

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Flexible Photodetectors Based on Novel Functional Materials

Cited by 288 publications

References 257 publications

Asymmetric Contact‐Induced Self‐Driven Perovskite‐Microwire‐Array Photodetectors

Asymmetric Contact‐Induced Self‐Driven Perovskite‐Microwire‐Array Photodetectors

Sn‐Based Perovskite for Highly Sensitive Photodetectors

2D Metal Chalcogenides for IR Photodetection

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