Fabrication of flexible ultraviolet photodetectors using an all-spray-coating process

Han, Junebeom; Lee, Jong-Hun; Ju, Sanghyun

doi:10.1063/1.4948460

Cited by 14 publications

(4 citation statements)

References 29 publications

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“…Up to now, 1D inorganic semiconducting nanostructures that have been successfully exploited in realm of flexible photodetection include Si NWs, Ge NWs, carbon NTs (CNTs), Se NBs, ZnO NWs (or NRs), GaN NWs, SnO NWs, CuO NWs, TiO 2 NRs, SnO 2 NWs (or NRs, NTs), MoO 3 nanosheets (NSs), CdS NWs, SnS NRs (or nanoflakes), CdSe NBs, ZnSe NBs, ZnTe NWs, GaTe NWs, InP NWs, GaP NWs, GaSb NWs, SnS 2 NSs, HfS 2 NBs, PbI 2 NWs (or NPs), ZrS 3 NBs, In 2 S 3 NWs, Sb 2 S 3 nanoneedles or nanowalls, Sb 2 Se 3 NWs, Zn 3 P 2 NWs, Zn 3 As 2 NWs, ZnGa 2 O 4 NWs, Zn 2 GeO 4 NWs, In 2 Ge 2 O 7 NWs, and hybrid heterostructures based on these nanomaterials . The 1D inorganic nanostructures can be easily synthesized by vapor‐phase methods, such as chemical vapor deposition (CVD), physical vapor deposition (PVD) and metal‐organic chemical vapor deposition (MOCVD).…”

Section: D Inorganic Nanostructures‐based Flexible Photodetectorsmentioning

confidence: 99%

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: D Inorganic Nanostructures‐based Flexible Photodetectorsmentioning

confidence: 99%

Flexible Photodetectors Based on Novel Functional Materials

Xie

Yan

2017

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“…This photostability characterization was pursued in order to assess the potential of our approach for outdoor applications (e.g., photodetectors that can be placed on windows, clothes, and human skin). [ 31 ] The detailed procedure for the deposition of the perovskite films (Figure S1, Supporting Information), along with the characterization and fabrication of photodetector devices, can be found in the Supporting Information. The R.H. was approximately 50–75% during device fabrication and characterization.…”

Section: Resultsmentioning

confidence: 99%

Bromine Doping of MAPbI₃ Films Deposited via Chemical Vapor Deposition Enables Efficient and Photo‐Stable Self‐Powered Photodetectors

Pammi

Tran

Reddeppa

et al. 2020

Advanced Optical Materials

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Hybrid lead‐halide perovskite photodetectors represent a highly promising technology, but long‐term operational stability under ambient conditions must be improved before these devices can be deployed in real‐world applications. In consideration of the relationship between film quality and device stability, this work explored photodetectors based on bromine‐doped CH3NH3PbI3 (i.e., CH3NH3PbI3−xBrx, MAPbI3−xBrx in short form) perovskite layers deposited via chemical vapor deposition (CVD). These layers have good compactness and no pinholes, hence they enable sandwich‐type photodetectors with high performance in self‐powered mode. Under 632 nm illumination, these photodetectors achieve a level of responsivity as high as 45 A/W, along with a specific detectivity of 1.15 × 1014 Jones and an external quantum efficiency of 8.84 × 103%. It is important to note that these photodetectors exhibit outstanding operational stability that is superior to that of their pure‐iodide (i.e., CH3NH3PbI3, MAPbI3 in short form) counterparts. When the MAPbI3−xBrx devices are stressed under simulated solar illumination in ambient air, their photoresponse is maintained to within 29% loss of the original value for more than 500 h, while the photoresponse of the MAPbI3 devices is reduced by 62%. The key figures of merit of the fabricated devices and their operational level of photostability are expected to create new avenues for future outdoor photodetector applications.

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“…In this case, the substrate for SERS requires a uniform distribution of nanostructures for the uniformity and stability of the Raman signal. To create a uniform distribution, the self-assembled monolayer, electrochemical deposition, and spray coating methods are adopted [28][29][30]. Within this study, the spray coating method was chosen and applied, which deposits relatively uniformly over a large area.…”

Section: Introductionmentioning

confidence: 99%

Enhancing SERS Intensity by Coupling PSPR and LSPR in a Crater Structure with Ag Nanowires

Ryu

Lee

et al. 2021

Applied Sciences

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The sensitive characteristics of surface-enhanced Raman scattering (SERS) can be applied to various fields, and this has been of interest to many researchers. Propagating surface plasmon resonance (PSPR) was initially utilized but, recently, it has been studied coupled with localized surface plasmon resonance that occurs in metal nanostructures. In this study, a new type of metal microstructure, named crater, was used for generating PSPR and Ag nanowires (AgNWs) for the generation of LSPR. A crater structure was fabricated on a GaAs (100) wafer using the wet chemical etching method. Then, a metal film was deposited inside the crater, and AgNWs were uniformly coated inside using the spray coating method. Metal films were used to enhance the electromagnetic field when coupled with AgNWs to obtain a high SERS intensity. The SERS intensity measured inside the crater structure with deposited AgNWs was up to 17.4 times higher than that of the flat structure with a deposited Ag film. These results suggest a new method for enhancing the SERS phenomenon, and it is expected that a larger SERS intensity can be obtained by fine-tuning the crater size and diameter and the length of the AgNWs.

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Fabrication of flexible ultraviolet photodetectors using an all-spray-coating process

Cited by 14 publications

References 29 publications

Flexible Photodetectors Based on Novel Functional Materials

Flexible Photodetectors Based on Novel Functional Materials

Bromine Doping of MAPbI₃ Films Deposited via Chemical Vapor Deposition Enables Efficient and Photo‐Stable Self‐Powered Photodetectors

Enhancing SERS Intensity by Coupling PSPR and LSPR in a Crater Structure with Ag Nanowires

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Fabrication of flexible ultraviolet photodetectors using an all-spray-coating process

Cited by 14 publications

References 29 publications

Flexible Photodetectors Based on Novel Functional Materials

Flexible Photodetectors Based on Novel Functional Materials

Bromine Doping of MAPbI3 Films Deposited via Chemical Vapor Deposition Enables Efficient and Photo‐Stable Self‐Powered Photodetectors

Enhancing SERS Intensity by Coupling PSPR and LSPR in a Crater Structure with Ag Nanowires

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Product

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Bromine Doping of MAPbI₃ Films Deposited via Chemical Vapor Deposition Enables Efficient and Photo‐Stable Self‐Powered Photodetectors