Roles of electrode interface on the performance of organic photodetectors

Nie, Riming; Zhao, Ze; Deng, Xinyang

doi:10.1016/j.synthmet.2017.03.010

Cited by 18 publications

(12 citation statements)

References 26 publications

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“…Except for the smaller contact barrier, Au/LiF also improved the conductivity of ZnO, and the Au nanostructures can cause plasmon resonance to enhance the absorption and promote the PCE of devices . For OPDs, applying ITO modified by LiF as the cathode can bring about the decrease of the series resistance ( R S ) and better response speed with a rise time of 1.9 μs . Meanwhile, NaCl can also be applied as an interlayer between metal electrodes and active layers.…”

Section: Inorganic Materialsmentioning

confidence: 99%

“…For the excellent performance, PEO could also be used in photodetectors. Nie et al reported that the WF of ITO and the R S of device could decrease after being modified with the PEO interlayer, which results in a faster response speed of 3.9 μs compared to the control OPDs with pure ITO (7.8 μs) . PEI is another ideal cathode interlayer in OSCs and OPDs.…”

Section: Organic Materialsmentioning

confidence: 99%

“…In OPDs, some amino acids were also used as the cathode interlayer to improve the performance. For example, arginine was used to modify ITO with better device performance comparted to the LiF interlayer because of the better ohmic context between the ITO and active layer, and the decrease of the R S . Moreover, some amino acids could be modified on other material to form new blend interlayer.…”

Section: Organic Materialsmentioning

confidence: 99%

“…31 For OPDs, applying ITO modified by LiF as the cathode can bring about the decrease of the series resistance (R S ) and better response speed with a rise time of 1.9 μs. 34 Meanwhile, NaCl can also be applied as an interlayer between metal electrodes and active layers. It performs similar to a bridge to enhance the energetic alignment at the polymer/Al interface.…”

Section: Inorganic Materialsmentioning

confidence: 99%

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Materials for Interfaces in Organic Solar Cells and Photodetectors

Chen

Wang

et al. 2019

ACS Appl. Mater. Interfaces

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Interface engineering is very important to the high performance of organic optoelectronic devices that are commonly composed of multilayer thin solid films. Interfacial materials are particularly crucial for interface engineering, and a variety of materials have been employed at the interface to accomplish various different functions. This Review summarizes various materials for the interfaces and some of the latest progress in organic solar cells (OSCs) and organic photodetectors (OPDs).

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Section: Inorganic Materialsmentioning

confidence: 99%

Section: Organic Materialsmentioning

confidence: 99%

Section: Organic Materialsmentioning

confidence: 99%

Section: Inorganic Materialsmentioning

confidence: 99%

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Materials for Interfaces in Organic Solar Cells and Photodetectors

Chen

Wang

et al. 2019

ACS Appl. Mater. Interfaces

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“…In order to detect low-intensity optical signals, complex equipment is generally required to reduce environmental noise. 22,23 Therefore, the biggest challenge of organic photodetectors is to significantly improve the responsiveness to obtain high EQE. 24 So that, researchers have carried out a lot of works to develop a novel photomultiplication (PM) structure in organic photodetectors.…”

Section: Introductionmentioning

confidence: 99%

Effective film surface treatment for improving external quantum efficiency of photomultiplication type organic photodetector

Xiao

Liang

et al. 2021

High Performance Polymers

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A simple yet effective method based on methanol treatment is proposed to enhance the external quantum efficiency (EQE) of the photomultiplication type organic photodetector with a structure of Glass/ITO/PEDOT:PSS/P3H:PC71BM (100:1, wt./wt.)/Al. By modifying the PEDOT:PSS film surface with methanol, the EQE of photodetector significantly improved within a broad wavelength range of 300–700 nm. The maximum EQE of 25300% occurs at the wavelength of 350 nm in the methanol-treated device under −9 V bias, which more than doubles that (11500%) of the device without treatment. In addition, as a result of the methanol treatment, the detectivity of the device improved from 3.72 × 1012 to 7.24 × 1012 Jones at −9 V under 350 nm light illumination. The large improvement is attributed to the fact that the methanol treatment can improve the electrical performance of the PEDOT:PSS by removing the insulator PSS within the film and also result in PC71BM aggregations in the active layer. The latter can enhance the tunneling hole injection by the intensified energy-level bending, which is induced by both the trapped electrons in these aggregations and accumulated ones near Al electrode. As a result, the modification of both the PEDOT:PSS layer and the active layer increases the response current, resulting in the EQE improvement.

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Optimization of the response spectra of organic photodetectors based on P3HT:PC61BM using PCPDTBT as the third component

Wang

Xue

2019

Opt Quant Electron

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Roles of electrode interface on the performance of organic photodetectors

Cited by 18 publications

References 26 publications

Materials for Interfaces in Organic Solar Cells and Photodetectors

Materials for Interfaces in Organic Solar Cells and Photodetectors

Effective film surface treatment for improving external quantum efficiency of photomultiplication type organic photodetector

Optimization of the response spectra of organic photodetectors based on P3HT:PC61BM using PCPDTBT as the third component

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