Fabrication of High‐Performance Biomass Derived Carbon/Metal Oxide Photocatalysts with Trilevel Hierarchical Pores from Organic–Inorganic Network

2019 ◽  
Vol 3 (6) ◽  
pp. 1800169 ◽  
Author(s):  
He Wang ◽  
Minghuan Qu ◽  
Shulan Wang ◽  
Xuan Liu ◽  
Li Li
Keyword(s):  
Metal Oxide ◽  
High Performance ◽  
Hierarchical Pores ◽  
Inorganic Network

scholarly journals Comparative Study ofSiO2,Al2O3, and BeO Ultrathin Interfacial Barrier Layers in Si Metal-Oxide-Semiconductor Devices

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
J. H. Yum ◽  
J. Oh ◽  
Todd. W. Hudnall ◽  
C. W. Bielawski ◽  
G. Bersuker ◽  
...  
Keyword(s):  
Metal Oxide ◽  
High Performance ◽  
Field Effect Transistors ◽  
Beryllium Oxide ◽  
Atomic Layer ◽  
Oxide Thickness ◽  
Metal Oxide Semiconductor ◽  
Oxide Semiconductor ◽  
Flat Band ◽  
Effective Electron

In a previous study, we have demonstrated that beryllium oxide (BeO) film grown by atomic layer deposition (ALD) on Si and III-V MOS devices has excellent electrical and physical characteristics. In this paper, we compare the electrical characteristics of inserting an ultrathin interfacial barrier layer such as SiO2, Al2O3, or BeO between the HfO2gate dielectric and Si substrate in metal oxide semiconductor capacitors (MOSCAPs) and n-channel inversion type metal oxide semiconductor field effect transistors (MOSFETs). Si MOSCAPs and MOSFETs with a BeO/HfO2gate stack exhibited high performance and reliability characteristics, including a 34% improvement in drive current, slightly better reduction in subthreshold swing, 42% increase in effective electron mobility at an electric field of 1 MV/cm, slightly low equivalent oxide thickness, less stress-induced flat-band voltage shift, less stress induced leakage current, and less interface charge.

High-sensitivity hybrid PbSe/ITZO thin film-based phototransistor detecting from 2100 nm to 2500 nm near-infrared illumination

2022 ◽  
Author(s):  
Ali Sehpar Shikoh ◽  
Gi Sang Choi ◽  
Sungmin Hong ◽  
Kwang Seob Jeong ◽  
Jaekyun Kim
Keyword(s):  
Thin Film ◽  
Metal Oxide ◽  
High Performance ◽  
Near Infrared ◽  
Effective Diffusion ◽  
Band Alignment ◽  
Oxide Thin Film ◽  
Photogenerated Carrier ◽  
Channel Layer ◽  
Metal Oxide Thin Film

Abstract We report that high absorption PbSe colloidal quantum dots (QDs) having a peak absorbance beyond 2100 nm were synthesized and incorporated into InSnZnO (ITZO) channel layer-based thin film transistors (TFTs). It was intended that PbSe QDs with proportionally less photocurrent modulation can be remedied by semiconducting and low off-current ITZO-based TFT configuration. Multiple deposition scheme of PbSe QDs on ITZO metal oxide thin film gave rise to nearly linear increase of film thickness with acceptably uniform and smooth surface (less than 10 nm). Hybrid PbSe/ITZO thin film-based phototransistor exhibited the best performance of near infrared (NIR) detection in terms of response time, sensitivity and detectivity as high as 0.38 s, 3.91 and 4.55 × 107 Jones at room temperature, respectively. This is indebted mainly from the effective diffusion of photogenerated carrier from the PbSe surface to ITZO channel layer as well as from the conduction band alignment between them. Therefore, we believe that our hybrid PbSe/ITZO material platform can be widely used to be in favour of incorporation of solution-processed colloidal light absorbing material into the high-performance metal oxide thin film transistor configuration.

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