Graphene‐Assisted Growth of Patterned Perovskite Films for Sensitive Light Detector and Optical Image Sensor Application

Wu, Chunyan; Wang, Zhenyu; Liang, Lin; Gui, Tijun; Zhong, Wei; Du, Rui-Chao; Xie, Chao; Wang, Li; Luo, Lin‐Bao

doi:10.1002/smll.201900730

Cited by 63 publications

(47 citation statements)

References 47 publications

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“…The vacuum filtration method is also one of the solution processing methods along with the layer by layer deposition, Langmuir-Blodgett, selfassembly process, and very common spin coating method. [19] After extensive studies over these methods, the restacking of the graphene was again identified and as an improvement a different set of synthesis methods like template-assisted synthesis or graphene itself being a template, [20] additives based synthesis like spacers and crumpling of the sheets was reported. Among these, crumpling of graphene could play a role in changing their electronic properties.…”

Section: Freestanding/self-standing Graphene-based Electrode Materialsmentioning

confidence: 99%

Advances on Emerging Materials for Flexible Supercapacitors: Current Trends and Beyond

Benzigar

Dasireddy²,

Guan

et al. 2020

Adv Funct Materials

126

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The progressive size reduction of electronic components is experiencing bottlenecks in shrinking charge storage devices like batteries and supercapacitors, limiting their development into wearable and flexible zero-pollution technologies. The inherent long cycle life, rapid charge-discharge patterns, and power density of supercapacitors rank them superior over other energy storage devices. In the modern market of zero-pollution energy devices, currently the lightweight formula and shape adaptability are trending to meet the current requirement of wearables. Carbon nanomaterials have the potential to meet this demand, as they are the core of active electrode materials for supercapacitors and texturally tailored to demonstrate flexible and stretchable properties. With this perspective, the latest progress in novel materials from conventional carbons to recently developed and emerging nanomaterials toward lightweight stretchable active compounds for flexi-wearable supercapacitors is presented. In addition, the limitations and challenges in realizing wearable energy storage systems and integrating the future of nanomaterials for efficient wearable technology are provided. Moreover, future perspectives on economically viable materials for wearables are also discussed, which could motivate researchers to pursue fabrication of cheap and efficient flexible nanomaterials for energy storage and pave the way for enabling a widerange of material-based applications.

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Section: Freestanding/self-standing Graphene-based Electrode Materialsmentioning

confidence: 99%

Advances on Emerging Materials for Flexible Supercapacitors: Current Trends and Beyond

Benzigar

Dasireddy²,

Guan

et al. 2020

Adv Funct Materials

126

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“…Photodetectors (PDs), which transduce the optical signal into electric information, are one of the key semiconductor devices in many fields, such as optical image sensors, environmental surveillance, electrocommunication and remote sensing technology, etc. [1][2][3][4]. Three kinds of devices, i.e., photodiodes, photoconductors, and photo-FETs (field-effect transistors), are commonly adopted to detect optical signals.…”

Section: Introductionmentioning

confidence: 99%

All-Perovskite Photodetector with Fast Response

et al. 2019

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Perovskites have attracted substantial attention on account of their excellent physical properties and simple preparation process. Here we demonstrated an improved photodetector based on solution-processing organic-inorganic hybrid perovskite CH 3 NH 3 PbI 3− x Cl x layer decorated with CsPbBr 3 perovskite quantum dots. The CH 3 NH 3 PbI 3− x Cl x -CsPbBr 3 photodetector was operated in a visible light region, which appeared high responsivity ( R = 0.39 A/W), detectivity ( D* = 5.43 × 10 9 Jones), carrier mobility ( μ p = 172 cm 2 V −1 s −1 and μ n = 216 cm 2 V −1 s −1 ), and fast response (rise time 121 μs and fall time 107 μs). The CH 3 NH 3 PbI 3− x Cl x -CsPbBr 3 heterostructure is anticipated to find comprehensive applications in future high-performance photoelectronic devices. Electronic supplementary material The online version of this article (10.1186/s11671-019-3082-z) contains supplementary material, which is available to authorized users.

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“…Patterned template‐assisted crystallization of MHPs can create high‐quality nano/microcrystals with perfect surface and homogeneous crystal size. The patterned templates are usually composed of silicon, [ 27,30–33 ] silicon oxide, [ 34 ] alumina, [ 21,35–37 ] 2D materials, [ 38–40 ] and polymer [ 13,26,41–49 ] by the means of photolithography, direct laser writing, focused‐ion‐beam etching, or electron‐beam etching. The perovskite precursor solution is usually dropped on the hydrophilic substrates and confined by hydrophobic patterned molds to create crystal seeds and grow ordered crystal arrays.…”

Section: Perovskite Patterning Technologiesmentioning

confidence: 99%

Metal Halide Perovskites Functionalized by Patterning Technologies

Huang

Xiao

Dong

2020

Adv Materials Technologies

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Date back to the first introduction of organic-inorganic hybrid perovskites into solar cells in 2009, [5] the power conversion efficiencies (PCEs) have been greatly boosted from 3.8% to 25.2% (certified PCEs) during the past decade. [6] With the merits of excellent photoluminescence (PL) quantum yield, perovskite-based light-emitting diodes (LEDs) have achieved external quantum efficiency (EQE) exceeding 20% via defect passivation, structural modification, and surface engineering. [7-9] In addition to the prosperity in photovoltaic and light-emitting devices, tremendous efforts are carried on the MHPs pursuing ultra-low threshold laser, [10,11] and ultra-sensitive photo-and X-ray detectors. [12-14] Solution processing method is commonly used for fabricating perovskite thin films. This cost-effective method allows large-scale production of smooth and uniform perovskite thin films served as the active layers of solar cells. [15] However, it is difficult to grow specific nano/microcrystals with desired dimensions and positions to meet the requirement of integrated electronic and optoelectronic devices with compactness. Patterning technology is widely used in optoelectronic fields to improve device performance. Performing various patterning technologies on materials not only obtain aesthetic value but also generate specific functions through constructing ordered and well-designed structures. [16-19] Specific structures and periodic patterns endow materials with unique light-matter interaction which has great impacts on photovoltaic and optoelectronic devices. [20] Moreover, patterning technologies can construct highresolution patterns down to nanoscale resolution, which meets the requirement for displaying and anti-counterfeiting applications. Therefore, performing versatile patterning technologies on MHPs would not only improve their electronic and optical properties but also opens a new pathway for integrated electronic and optoelectronic systems with unique and novel functions. Here, an overview of the recent advances of patterning technology in the field of MHPs is presented (Figure 1). The patterning technologies were divided into two parts based on whether patterned templates are required. With the merits of patterning technologies, the patterned MHPs exhibited novel functions and enhanced performance in optical and optoelectronic applications, such as solar cells, photodetectors, laser, anti-counterfeiting, and full-color displays. Therefore, the relationship between the patterned structures and the MHPs device performance as well as the corresponding mechanisms are discussed in detail. Finally, a summary and some perspectives on the existing challenges of patterned MHPs are put forward. Metal halide perovskites (MHPs), as emerging stars, are greatly attracted due to their superior optical and optoelectrical properties. The design and construction of patterned materials have been considered as a powerful tool to improve the performance of optical and optoelectronic devices. Therefore, the marriage of MHPs and ...

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Graphene‐Assisted Growth of Patterned Perovskite Films for Sensitive Light Detector and Optical Image Sensor Application

Cited by 63 publications

References 47 publications

Advances on Emerging Materials for Flexible Supercapacitors: Current Trends and Beyond

Advances on Emerging Materials for Flexible Supercapacitors: Current Trends and Beyond

All-Perovskite Photodetector with Fast Response

Metal Halide Perovskites Functionalized by Patterning Technologies

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