Photomultiplication type organic photodetectors with tunable spectral response range

As a promising candidate for next-generation photodetectors, organic photodetectors (OPDs) have gained increasing interest as they offer cost-effective fabrication methods using solution processes and a tunable spectral response range, making them particularly attractive for large area image sensors on lightweight flexible substrates. Carrier blocking layers engineering is very important to the high performance of OPDs that can select a certain charge carriers (holes or electrons) to be collected and suppress another carrier. Carrier blocking layers of OPDs play a critical role in reducing dark current, boosting their efficiency and long-time stability. This Review summarizes various materials for carrier blocking layers and some of the latest progress in OPDs. This provides the reader with guidelines to improve the OPD performance via carrier blocking layers engineering.

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Enhancing the performance of photomultiplication-type organic photodetectors using solution-processed ZnO as an interfacial layer

Journal of Materials Chemistry C ◽

10.1039/c8tc04962a ◽

2019 ◽

Vol 7 (6) ◽

pp. 1544-1550 ◽

Cited By ~ 17

Author(s):

Jianbin Wang ◽

Qingdong Zheng

Keyword(s):

Interfacial Layer ◽

Spectral Response ◽

Solution Processed ◽

Response Range ◽

Organic Photodetectors

In comparison with PEDOT:PSS-based OPDs, ZnO-based OPDs show a broader spectral-response range with enhanced EQE, responsivity and detectivity.

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Broadband photomultiplication organic photodetectors

Physical Chemistry Chemical Physics ◽

10.1039/d0cp05811d ◽

2021 ◽

Author(s):

Mengyao Liu ◽

Jian Wang ◽

Kaixuan Yang ◽

Ming Liu ◽

Zijin Zhao ◽

...

Keyword(s):

Active Layer ◽

Response Range ◽

Organic Photodetectors

Broadband photomultiplication organic photodetectors (PMOPDs) can be achieved with double-layered active layer preparing from IEICO-4F:PBDB-T blend solutions with different weight ratios (1:1 or 3:100, wt/wt). The response range of the...

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Double dye cubic-sensitized solar cell based on Förster resonant energy transfer

RSC Advances ◽

10.1039/c4ra10935j ◽

2015 ◽

Vol 5 (13) ◽

pp. 10026-10032 ◽

Cited By ~ 5

Author(s):

Wenxia Li ◽

Jingbo Zhang ◽

Yingyu Cao ◽

Yuan Lin

Keyword(s):

Energy Transfer ◽

Spectral Response ◽

Dye Sensitized Solar Cells ◽

Eosin Y ◽

Zno Thin Film ◽

Resonant Energy ◽

Dye Sensitized ◽

Response Range ◽

Resonant Energy Transfer ◽

Sensitized Solar Cells

To extend the spectral response range of dye-sensitized solar cells through Förster resonant energy transfer, eosin Y and rhodamine B were chosen as an donor and a acceptor to cubic-sensitize nanocrystalline ZnO thin film.

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Planar Heterojunction Organic Photodetectors Based on Fullerene and Non-fullerene Acceptor Bilayers for a Tunable Spectral Response

ACS Applied Materials & Interfaces ◽

10.1021/acsami.0c16192 ◽

2020 ◽

Vol 12 (49) ◽

pp. 55064-55071

Author(s):

Bin Zhang ◽

Yun Li ◽

Yao Ma ◽

Ruoxi Xia ◽

Xin Li ◽

...

Keyword(s):

Spectral Response ◽

Planar Heterojunction ◽

Organic Photodetectors

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Manganite Heterojunction Photodetector with Broad Spectral Response Range from 200 nm to 2 μm

Micromachines ◽

10.3390/mi11020129 ◽

2020 ◽

Vol 11 (2) ◽

pp. 129

Author(s):

Ru Chen ◽

Zhiqing Lu ◽

Kun Zhao

Keyword(s):

Size Effect ◽

Transition Point ◽

Spectral Response ◽

Visible Range ◽

Oxide Heterostructures ◽

Junction Resistance ◽

Quantum Size ◽

Microelectronic Devices ◽

Response Range ◽

Infrared Photodetection

In this paper, we investigate the broad spectral photocurrent properties of the La0.67Ca0.33MnO3/Si (LCMO/Si) heterojunction from 200 nm to 2.0 μm, as the temperature increases from 95 to 300 K. We observed the junction’s uniform responsivity in the visible range and five absorption peaks at 940 nm, 1180 nm, 1380 nm, 1580 nm, and 1900 nm wavelengths. The temperature showed effective affection to the photocurrents at absorption peaks and the transition point occurred at 216 K, which was also displayed in the temperature dependence of junction resistance. On the basis of the results, we propose a possible model involving the quantum size effect at the junction interface as the mechanism. This understanding of the infrared photodetection properties of oxide heterostructures should open a route for devising future microelectronic devices.

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Erasable memory properties of spectral selectivity modulated by temperature and bias in an individual CdS nanobelt-based photodetector

Nanoscale Horizons ◽

10.1039/c8nh00182k ◽

2019 ◽

Vol 4 (1) ◽

pp. 138-147 ◽

Cited By ~ 9

Author(s):

Tao Tong ◽

Shujuan Wang ◽

Jie Zhao ◽

Baochang Cheng ◽

Yanhe Xiao ◽

...

Keyword(s):

Spectral Response ◽

High Response ◽

Bandgap Energy ◽

Spectral Selectivity ◽

Response Range

Single CdS nanobelt-based photodetectors show an ultra-high response to light close to the bandgap energy at large bias, and moreover their spectral response range selectivity to above- and below-bandgap light can show an reversable memory by temperature-writing and bias-erasing.

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Facile Synthesis of Indium Sulfide/Flexible Electrospun Carbon Nanofiber for Enhanced Photocatalytic Efficiency and Its Application

Scanning ◽

10.1155/2017/6513903 ◽

2017 ◽

Vol 2017 ◽

pp. 1-10 ◽

Cited By ~ 2

Author(s):

Liu Han ◽

Haohao Dong ◽

Dong Mao ◽

Baolv Hua ◽

Qinyu Li ◽

...

Keyword(s):

Carbon Nanofiber ◽

Diffuse Reflectance Spectroscopy ◽

Spectral Response ◽

Heterogeneous Systems ◽

Indium Sulfide ◽

One Pot ◽

One Dimensional ◽

Response Range ◽

Uv Visible ◽

The One

Heterojunction system has been proved as one of the best architectures for photocatalyst owing to extending specific surface area, expanding spectral response range, and increasing photoinduced charges generation, separation, and transmission, which can provide better light absorption range and higher reaction site. In this paper, Indium Sulfide/Flexible Electrospun Carbon Nanofiber (In2S3/CNF) heterogeneous systems were synthesized by a facile one-pot hydrothermal method. The results from characterizations of SEM, TEM, XRD, Raman, and UV-visible diffuse reflectance spectroscopy displayed that flower-like In2S3 was deposited on the hair-like CNF template, forming a one-dimensional nanofibrous network heterojunction photocatalyst. And the newly prepared In2S3/CNF photocatalysts exhibit greatly enhanced photocatalytic activity compared to pure In2S3. In addition, the formation mechanism of the one-dimensional heterojunction In2S3/CNF photocatalyst is discussed and a promising approach to degrade Rhodamine B (RB) in the photocatalytic process is processed.

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Preparation and photocatalytic activity of pendant heteroaryl groups (pyrimidine and pyridine) grafted polyterthiophene/TiO2 composites

Materials Express ◽

10.1166/mex.2020.1834 ◽

2020 ◽

Vol 10 (11) ◽

pp. 1877-1891

Author(s):

Yingcheng Liu ◽

Abdukeyum Abdurexit ◽

Ruxangul Jamal ◽

Wenli Zhang ◽

Yinqiang Yan ◽

...

Keyword(s):

Photocatalytic Activity ◽

Structural Analysis ◽

Uv Light ◽

Spectral Response ◽

Solar Irradiation ◽

Molar Ratio ◽

Response Range ◽

Non Covalent Interactions ◽

Simulated Solar Irradiation ◽

Covalent Interactions

In this paper, new π-conjugated heterocyclic systems with pyrimidine- and pyridine-grafted polyterthiophene were combined with TiO2 to obtain composite materials (PDTPrT/TiO2 and PDTPrmT/TiO2). The photocatalytic properties of the composites were tested by using them to degrade MB using UV-light and simulated solar irradiation. The structural analysis revealed that the pyrimidine and pyridine groups in the polyterthiophenes interacted with TiO2 via non-covalent interactions. The combination of the substituted polyterthiophene and TiO2 restrained the recombination rate of photogenerated e-?h+ pairs and broadened the spectral response range of TiO2. The results indicated that PDTPrT/TiO2 and PDTPrmT/TiO2 with a TiO2-to-monomer molar ratio of 75 had the highest photodegradation rates under UV light (98.6% and 97.4%, respectively after 10 min) and simulated solar (95.4% and 92.7%, respectively after 300 min).

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