3D Arrays of 1024‐Pixel Image Sensors based on Lead Halide Perovskite Nanowires

Gu, Leilei; Tavakoli, Mohammad Mahdi; Zhang, Daquan; Zhang, Qianpeng; Waleed, Aashir; Xiao, Yiqun; Tsui, Kwong-Hoi; Lin, Yuanjing; Liao, Lei; Wang, Jiannong; Fan, Zhiyong

doi:10.1002/adma.201601603

Cited by 240 publications

(307 citation statements)

References 36 publications

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“…In addition, the outstanding mechanical flexibility renders them extremely beneficial for flexible electronics and optoelectronics. Specifically, single‐crystal perovskite NWs have been intensively explored as building blocks for semiconductor lasers and high‐performance flexible photodetectors . For example, Deng et al have assembled uniform CH 3 NH 3 PbI 3 perovskite NW networks combing both decent optical transparency and superior device performance on PET substrates for photodetection applications through controlling perovskite crystallization .…”

Section: Perovskite Materials‐based Flexible Photodetectorsmentioning

confidence: 99%

“…In addition, the rapid response speed (a rise time of ≈80 µs and a fall time of ≈240 µs) is much faster than the time resolution of human eyes (≈42 ms), enabling the possibility for electronic‐eye applications. In another work, 3D CH 3 NH 3 PbI 3 perovskite NW arrays were synthesized using nano‐channels with well‐controlled geometries including periodicity, diameter and depth, as precise nano‐engineering templates, via a vapor‐solid‐solid reaction (VSSR) process, as reported by Gu and co‐workers . In this process, Pb metal nanoclusters serving as reactants are electrochemical deposited at the bottom of a 2 µm‐thick free‐standing porous alumina membrane (PAM) to initiate the growth of NW arrays with high‐quality in a tube furnace.…”

Section: Perovskite Materials‐based Flexible Photodetectorsmentioning

confidence: 99%

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Flexible Photodetectors Based on Novel Functional Materials

Xie

Yan

2017

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Flexible photodetectors have attracted a great deal of research interest in recent years due to their great possibilities for application in a variety of emerging areas such as flexible, stretchable, implantable, portable, wearable and printed electronics and optoelectronics. Novel functional materials, including materials with zero-dimensional (0D) and one-dimensional (1D) inorganic nanostructures, two-dimensional (2D) layered materials, organic semiconductors and perovskite materials, exhibit appealing electrical and optoelectrical properties, as well as outstanding mechanical flexibility, and have been widely studied as building blocks in cost-effective flexible photodetection. Here, we comprehensively review the outstanding performance of flexible photodetectors made from these novel functional materials reported in recent years. The photoresponse characteristics and flexibility of the devices will be discussed systematically. Summaries and challenges are provided to guide future directions of this vital research field.

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Section: Perovskite Materials‐based Flexible Photodetectorsmentioning

confidence: 99%

Section: Perovskite Materials‐based Flexible Photodetectorsmentioning

confidence: 99%

Flexible Photodetectors Based on Novel Functional Materials

Xie

Yan

2017

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“…[3][4][5] In other words, traditional photodetectors can detect the images like a retina, but they lack the memory function owned by the visual cortex (see schematic illustration of human visual system in Figure 1a). [3][4][5] In other words, traditional photodetectors can detect the images like a retina, but they lack the memory function owned by the visual cortex (see schematic illustration of human visual system in Figure 1a).…”

mentioning

confidence: 99%

An Artificial Optoelectronic Synapse Based on a Photoelectric Memcapacitor

Zhao

Fan

Cheng

et al. 2019

Adv Elect Materials

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away quickly when the light stimuli are removed. [3][4][5] In other words, traditional photodetectors can detect the images like a retina, but they lack the memory function owned by the visual cortex (see schematic illustration of human visual system in Figure 1a). To realize both detection and memory functions so as to better imitate the human visual system, researchers have attempted to integrate the photodetectors with the nonvolatile memory devices. [6][7][8][9] For example, a bioinspired visual system comprising an In 2 O 3 nanowire photodetector connected in series with an Al 2 O 3 memristor was fabricated recently, which could capture a butterflyshaped image and store it for more than 1 week. [9] In such integrated devices, however, the units responsible for detection, processing, and storage of optical information are physically separated, resulting in high power consumption for data transfer between different units (just as the Von Neumann bottleneck [10,11] ).A simple yet effective humanoid optoelectronic device emerging recently is the artificial optoelectronic synapse based on the photoelectric memristor, which can co-locate the detection and memory functions in a single unit. As the name suggests, a photoelectric memristor can continuously change its resistance upon light stimuli, resembling the physiological The rapid development of artificial intelligence technology has led to the urge for artificial optoelectronic synapses with visual perception and memory capabilities. A new type of artificial optoelectronic synapse, namely a photo electric memcapacitor, is proposed and demonstrated. This photoelectric memcapacitor, with a planar Au/La 1.875 Sr 0.125 NiO 4 /Au metal-semiconductormetal structure, displays a complementary optical and electrical modulation of capacitance, which can be attributed to the charge trapping/detrapping induced Schottky barrier variation. It further exhibits versatile synaptic functions, such as photonic potentiation/electric depression, pairedpulse facilitation, short/longterm memory, and "learningexperience" behavior. Moreover, the photoplasticity of the memcapacitor can be modulated by varying the frequency of applied AC voltage, thus enabling selfadaptive optical signal detection and mimicry of interestmodulated human visual memory. Therefore, it represents a new paradigm for artificial optoelectronic synapses and opens up opportunities for developing lowpower humanoid optoelectronic devices.

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“…In the later work, Gu et al increased the number of pixels to 1024 in each image sensor using well‐aligned nanowires by a templated method discussed above (Figure F). The still images and videos could be well captured by these high‐resolution nanowire arrays (Figure G) . For further comparison, we summarize the key parameters of photodetectors based on 1D perovskites in Table .…”

Section: D Metal Halide Perovskitesmentioning

confidence: 99%

“…F, Layer‐by‐layer structure of 32 × 32 MAPbI 3 nanowire‐based image sensor. G, Photoresponse of the single pixel under the light of 6 mW cm −2 and a voltage of 3 V. Reproduced with permission . Copyright 2016 Wiley‐VCH…”

Section: D Metal Halide Perovskitesmentioning

confidence: 99%

Low‐dimensional metal halide perovskites and related optoelectronic applications

Zhu

2020

InfoMat

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Low‐dimensional materials have pivotal significance in modern photonic, electronic, and optoelectronic areas due to their unique properties of the scale effect. Metal halide perovskites have revived in the optoelectronic fields recently, drawing intensive attention in photovoltaic devices, light‐emitting diodes, lasers, photodetectors, and so on. Compared to their three‐dimensional counterparts, the role of low‐dimensional perovskites is becoming crucial, requiring a comprehensive understanding and exploration unceasingly. In this review, we examine low‐dimensional perovskite of different forms and clarify various synthesis methods with morphological and dimensional control. Additionally, we also summarize potential optoelectronic applications based on their advantageous optical/electrical properties and enhanced mechanical integrity and stability. Finally, we propose a future perspective and possible developing directions in the exploration of novel perovskite‐derived materials, new physics, and promising applications.

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3D Arrays of 1024‐Pixel Image Sensors based on Lead Halide Perovskite Nanowires

Cited by 240 publications

References 36 publications

Flexible Photodetectors Based on Novel Functional Materials

Flexible Photodetectors Based on Novel Functional Materials

An Artificial Optoelectronic Synapse Based on a Photoelectric Memcapacitor

Low‐dimensional metal halide perovskites and related optoelectronic applications

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