Filterless vacuum ultraviolet photoconductive detector fabricated on NdF3 thin film

2012 ◽  
Author(s):  
Mirai Ieda ◽  
Tatsuya Ishimaru ◽  
Shingo Ono ◽  
Yuui Yokota ◽  
Takayuki Yanagida ◽  
...  
Keyword(s):  
Thin Film ◽  
Vacuum Ultraviolet ◽  
Photoconductive Detector

Vacuum ultraviolet photoconductive detector based on pulse laser deposition-grown neodymium fluoride thin film

2013 ◽  
Vol 534 ◽  
pp. 12-14 ◽  
Author(s):  
Tatsuya Ishimaru ◽  
Mirai Ieda ◽  
Shingo Ono ◽  
Yuui Yokota ◽  
Takayuki Yanagida ◽  
...  
Keyword(s):  
Thin Film ◽  
Pulse Laser Deposition ◽  
Pulse Laser ◽  
Vacuum Ultraviolet ◽  
Laser Deposition ◽  
Photoconductive Detector

scholarly journals Effect of Substrate and Thickness on the Photoconductivity of Nanoparticle Titanium Dioxide Thin Film Vacuum Ultraviolet Photoconductive Detector

Nanomaterials ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 10
Author(s):  
Marilou Cadatal-Raduban ◽  
Tomoki Kato ◽  
Yusuke Horiuchi ◽  
Jiří Olejníček ◽  
Michal Kohout ◽  
...  
Keyword(s):  
Thin Film ◽  
Titanium Dioxide ◽  
Film Thickness ◽  
Response Time ◽  
Vacuum Ultraviolet ◽  
Optical Quality ◽  
Tio2 Nanoparticle ◽  
Soda Lime Glass ◽  
Sio2 Substrate ◽  
Photoconductive Detector

Vacuum ultraviolet radiation (VUV, from 100 nm to 200 nm wavelength) is indispensable in many applications, but its detection is still challenging. We report the development of a VUV photoconductive detector, based on titanium dioxide (TiO2) nanoparticle thin films. The effect of crystallinity, optical quality, and crystallite size due to film thickness (80 nm, 500 nm, 1000 nm) and type of substrate (silicon Si, quartz SiO2, soda lime glass SLG) was investigated to explore ways of enhancing the photoconductivity of the detector. The TiO2 film deposited on SiO2 substrate with a film thickness of 80 nm exhibited the best photoconductivity, with a photocurrent of 5.35 milli-Amperes and a photosensitivity of 99.99% for a bias voltage of 70 V. The wavelength response of the detector can be adjusted by changing the thickness of the film as the cut-off shifts to a longer wavelength, as the film becomes thicker. The response time of the TiO2 detector is about 5.8 μs and is comparable to the 5.4 μs response time of a diamond UV sensor. The development of the TiO2 nanoparticle thin film detector is expected to contribute to the enhancement of the use of VUV radiation in an increasing number of important technological and scientific applications.

Chemical bath deposited ZnO thin film based UV photoconductive detector

2016 ◽  
Vol 664 ◽  
pp. 242-249 ◽  
Author(s):  
Shahin K. Shaikh ◽  
Sumayya I. Inamdar ◽  
Vinayak V. Ganbavle ◽  
Kesu Y. Rajpure
Keyword(s):  
Thin Film ◽  
Zno Thin Film ◽  
Photoconductive Detector

The Roles of Several E′ Variants in Thermal Gate Oxide Reliability

1994 ◽  
Vol 338 ◽  
Author(s):  
John F. Conley ◽  
P.M. Lenahan ◽  
H.L. Evans ◽  
R.K. Lowry ◽  
T.J. Morthorst
Keyword(s):  
Thin Film ◽  
Electron Spin Resonance ◽  
Electron Spin ◽  
Vacuum Ultraviolet ◽  
Charge Injection ◽  
Charge Trapping ◽  
Gate Oxide ◽  
Oxide Reliability ◽  
Spin Resonance ◽  
Thermally Grown

ABSTRACTWe combine electron spin resonance measurements with vacuum ultraviolet, ultraviolet, and corona bias charge injection schemes to examine the properties and charge trapping roles of three E′ variants in conventionally processed thermally grown thin film SiO2 on Si.

scholarly journals Vacuum Ultraviolet Field Emission Lamp Consisting of Neodymium Ion Doped Lutetium Fluoride Thin Film as Phosphor

2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
Masahiro Yanagihara ◽  
Takayuki Tsuji ◽  
Mohd Zamri Yusop ◽  
Masaki Tanemura ◽  
Shingo Ono ◽  
...  
Keyword(s):  
Thin Film ◽  
Field Emission ◽  
Vacuum Ultraviolet ◽  
Performance Enhancement ◽  
Carbon Nanofiber ◽  
Emission Spectra ◽  
Electron Emitters ◽  
Acceleration Voltage ◽  
Good Agreement ◽  
Neodymium Ion

A vacuum ultraviolet (VUV) field emission lamp was developed by using a neodymium ion doped lutetium fluoride (Nd3+ : LuF3) thin film as solid-state phosphor and carbon nanofiber field electron emitters. The thin film was synthesized by pulsed laser deposition and incorporated into the lamp. The cathodoluminescence spectra of the lamp showed multiple emission peaks at 180, 225, and 255 nm. These emission spectra were in good agreement with the spectra reported for the Nd3+ : LuF3crystal. Moreover, application of an acceleration voltage effectively increased the emission intensity. These results contribute to the performance enhancement of the lamp operating in the VUV region.

scholarly journals Солнечный телескоп вакуумного ультрафиолетового диапазона для наноспутников

2021 ◽  
Vol 91 (10) ◽  
pp. 1441
Author(s):  
С.В. Кузин ◽  
С.А. Богачев ◽  
Н.Ф. Ерхова ◽  
А.А. Перцов ◽  
И.П. Лобода ◽  
...  
Keyword(s):  
Thin Film ◽  
Solar Corona ◽  
Vacuum Ultraviolet ◽  
Point Of View ◽  
Optical Scheme ◽  
Multilayer Mirrors ◽  
Thin Film Filters ◽  
Spectral Ranges

Within the Universat program, a set of solar vacuum ultraviolet (VUV) telescopes has been developed for deployment on 6U nanosatellites. Telescopes are designed to get images of the solar corona. The spectral ranges of observations is considered, the characteristics of the nanosatellite from the point of view of the observations feasibility are opmized, the optical scheme of the telescope and VUV multilayer mirrors coatings and thin-film filters are modelled.

Organic monolayers modified by vacuum ultraviolet irradiation for solution-processed organic thin-film transistors

2022 ◽  
Author(s):  
Satoshi Inoue ◽  
Yoshiaki HATTORI ◽  
Masatoshi KITAMURA
Keyword(s):  
Thin Film ◽  
Photoelectron Spectroscopy ◽  
Thin Film Transistors ◽  
Vacuum Ultraviolet ◽  
Irradiation Time ◽  
Angle Measurement ◽  
Organic Thin Film Transistors ◽  
Organic Thin Film ◽  
Water Contact ◽  
Solution Processed

Abstract A trimethylsilyl-monolayer modified by vacuum ultraviolet (VUV) light has been investigated for use in solution-processed organic thin-film transistors (OTFTs). The VUV irradiation changed a hydrophobic trimethylsilyl-monolayer formed from hexamethyldisilazane vapor into a hydrophilic surface suitable for solution processing. The treated surface was examined via water contact angle measurement and X-ray photoelectron spectroscopy. An appropriate irradiation of VUV light enabled the formation of a dioctyl[1]benzothieno[3,2-b][1]benzothiophene (C8-BTBT) film on a modified monolayer by spin-coating. Consequently, the C8-BTBT-based OTFT with a monolayer modified for an optimal VUV irradiation time exhibited a field-effect mobility up to 4.76 cm2 V−1 s−1. The partial monolayer modification with VUV can be adapted to a variety of solution-processes and organic semiconductors for prospective printed electronics.

scholarly journals Vacuum ultraviolet field emission lamp utilizing KMgF3 thin film phosphor

APL Materials ◽  
2014 ◽  
Vol 2 (4) ◽  
pp. 046110 ◽  
Author(s):  
Masahiro Yanagihara ◽  
Mohd Zamri Yusop ◽  
Masaki Tanemura ◽  
Shingo Ono ◽  
Tomohito Nagami ◽  
...  
Keyword(s):  
Thin Film ◽  
Field Emission ◽  
Vacuum Ultraviolet
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