scholarly journals A visible-light phototransistor based on the heterostructure of ZnO and TiO2 with trap-assisted photocurrent generation

RSC Advances ◽  
2021 ◽  
Vol 11 (20) ◽  
pp. 12051-12057
Author(s):  
Byung Jun Kim ◽  
Jun Hyung Jeong ◽  
Eui Young Jung ◽  
Tae Yeon Kim ◽  
Sungho Park ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Visible Light ◽  
Titanium Oxide ◽  
Photocurrent Generation

Visible-light phototransistors have been fabricated based on the heterojunction of zinc oxide (ZnO) and titanium oxide (TiO2).

scholarly journals Removal of Organic Dyes from Water and Wastewater Using Magnetic Ferrite-Based Titanium Oxide and Zinc Oxide Nanocomposites: A Review

Catalysts ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 1543
Author(s):  
António B. Mapossa ◽  
Washington Mhike ◽  
José L. Adalima ◽  
Shepherd Tichapondwa
Keyword(s):  
Zinc Oxide ◽  
Visible Light ◽  
Titanium Oxide ◽  
Organic Dyes ◽  
Organic Pollutant ◽  
Synthesis Method ◽  
Degradation Efficiency ◽  
Commercial Application ◽  
Synthesis Methods ◽  
Subsequent Formation

Heterogeneous photocatalysis using titanium dioxide (TiO2) and zinc oxide (ZnO) has been widely studied in various applications, including organic pollutant remediation in aqueous systems. The popularity of these materials is based on their high photocatalytic activity, strong photosensitivity, and relatively low cost. However, their commercial application has been limited by their wide bandgaps, inability to absorb visible light, fast electron/hole recombination, and limited recyclability since the nanomaterial is difficult to recover. Researchers have developed several strategies to overcome these limitations. Chief amongst these is the coupling of different semi-conductor materials to produce heterojunction nanocomposite materials, which are both visible-light-active and easily recoverable. This review focuses on the advances made in the development of magnetic ferrite-based titanium oxide and zinc oxide nanocomposites. The physical and magnetic properties of the most widely used ferrite compounds are discussed. The spinel structured material had superior catalytic and magnetic performance when coupled to TiO2 and ZnO. An assessment of the range of synthesis methods is also presented. A comprehensive review of the photocatalytic degradation of various priority organic pollutants using the ferrite-based nanocomposites revealed that degradation efficiency and magnetic recovery potential are dependent on factors such as the chemical composition of the heterojunction material, synthesis method, irradiation source, and structure of pollutant. It should be noted that very few studies have gone beyond the degradation efficiency studies. Very little information is available on the extent of mineralization and the subsequent formation of intermediate compounds when these composite catalysts are used. Additionally, potential degradation mechanisms have not been adequately reported.

scholarly journals Photocurrent generation from visible light irradiation of covalent polyoxometalate–porphyrin copolymers

2021 ◽  
Vol 368 ◽  
pp. 137635
Author(s):  
Zhaohui Huo ◽  
Yiming Liang ◽  
Shu Yang ◽  
Dejin Zang ◽  
Rana Farha ◽  
...  
Keyword(s):  
Visible Light ◽  
Visible Light Irradiation ◽  
Light Irradiation ◽  
Photocurrent Generation

Improving the photodetection and stability of a visible-light QDs/ZnO phototransistor via an Al2O3 additional layer

2021 ◽  
Author(s):  
Sungho Park ◽  
Byung Jun Kim ◽  
Tae Yeon Kim ◽  
Eui Young Jung ◽  
Kyu-Myung Lee ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Atomic Layer Deposition ◽  
Quantum Dot ◽  
Aluminum Oxide ◽  
Thin Layer ◽  
Visible Light ◽  
Atomic Layer ◽  
Zno Films ◽  
Additional Layer ◽  
Layer Deposition

We have developed a visible-light phototransistor with excellent photodetection characteristics and stability via atomic layer deposition (ALD) to add a thin layer of aluminum oxide (Al2O3) to quantum dot (QD)/zinc oxide (ZnO) films.

Fabrication of indium gallium zinc oxide phototransistors via oxide-mesh insertion for visible light detection

2020 ◽  
Vol 8 (1) ◽  
pp. 165-172 ◽  
Author(s):  
Dongwoo Kim ◽  
Yeong-gyu Kim ◽  
Byung Ha Kang ◽  
Jin Hyeok Lee ◽  
Jusung Chung ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Visible Light ◽  
Oxygen Vacancies ◽  
Indium Gallium Zinc Oxide ◽  
Light Detection ◽  
Indium Gallium

Visible light detection of oxide phototransistors via insertion of an oxide-mesh inside the channel creating oxygen vacancies that increase subgap states.

Morphology-controlled synthesis of Ti3+ self-doped yolk–shell structure titanium oxide with superior photocatalytic activity under visible light

2014 ◽  
Vol 213 ◽  
pp. 98-103 ◽  
Author(s):  
Shixiong Wang ◽  
Xiangjun Yang ◽  
Yapeng Wang ◽  
Lixiang Liu ◽  
Yuanyuan Guo ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Titanium Oxide ◽  
Shell Structure ◽  
Controlled Synthesis

Ion-assisted electron-beam evaporation of carbon-doped titanium oxide films as visible-light photocatalyst

2007 ◽  
Vol 515 (7-8) ◽  
pp. 3521-3526 ◽  
Author(s):  
Shih-Wei Hsu ◽  
Tien-Syh Yang ◽  
Ta-Kun Chen ◽  
Ming-Show Wong
Keyword(s):  
Electron Beam ◽  
Visible Light ◽  
Titanium Oxide ◽  
Oxide Films ◽  
Electron Beam Evaporation ◽  
Visible Light Photocatalyst ◽  
Carbon Doped ◽  
Titanium Oxide Films
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