搜索结果: 1-13 共查到“工学 Band gap”相关记录13条 . 查询时间(0.043 秒)
Morphology Characterization of Low Band Gap Polymer-based Organic Photovoltaics
Morphology organic photovoltaic phase separation crystallization diffusion
2014/11/21
In bulk heterojunction (BHJ) thin film organic photovoltaics (OPV), morphology control is critical to obtain good device efficiency. Nanoscale phase separation that creates bicontinuous interpenetrati...
Intensity Dependent Nonlinear Absorption in Direct and Indirect Band Gap Crystals under Nano and Picosecond Z-Scan
Direct and Indirect Band Gap Crystals Two Photon Absorption Three Photon Absorption Saturated Absorption
2013/1/30
The nonlinear absorption properties of direct (GaN) and indirect (CdI2) band gap crystals have been studied by using an open aperture Z-scan technique under fundamental (1064 nm) and frequency doubled...
Band gap control via tuning of inversion degree in CdIn$_2$S$_4$ spinel
Band gap control tuning inversion degree CdIn$_2$S$_4$ spinel
2012/2/24
Based on theoretical arguments we propose a possible route for controlling the band-gap in the promising photovoltaic material CdIn$_2$S$_4$. Our \textit{ab initio} calculations show that the experime...
Wide band gap tunability in complex transition metal oxides by site-specific substitution
Wide band gap tunability complex transition metal oxides site-specific substitution
2012/2/24
Fabricating complex transition metal oxides with a tuneable band gap without compromising their intriguing physical properties is a longstanding challenge. Here we examine the layered ferroelectric bi...
Band gap tuning in ferroelectric Bi4Ti3O12 by alloying LaTMO3 (TM = Ti, V, Cr, Mn, Co, Ni, and Al)
Band gap tuning ferroelectric Bi4Ti3O12 alloying LaTMO3
2012/2/24
We fabricated ferroelectric Bi4Ti3O12 (BiT) single crystalline thin films site-specifically substituted with LaTMO3 (TM = Al, Ti, V, Cr, Mn, Co, and Ni) on SrTiO3 substrates by pulsed laser epitaxy. W...
Genetic algorithm for band gap optimization under light line in two-dimensional photonic crystal slab
two-dimensional photonic crystals
2011/5/10
An optimization algorithm is used to design a two-dimensional photonic crystal slab for large absolute band gaps under light line. In this procedure, the unit cell of the crystal is composed of a numb...
Universal features of coherent photonic thermal conductance in multilayer photonic band gap structures
Universal features photonic thermal conductance multilayer photonic band gap structures
2015/8/10
We show that at the high-temperature limit, the coherent photonic thermal conductance of a multilayer photonic crystal can be significantly below the corresponding thermal conductance of vacuum....
Genetic algorithm for band gap optimization under light line in two-dimensional photonic crystal slab
two-dimensional photonic crystals
2011/5/10
An optimization algorithm is used to design a two-dimensional photonic crystal slab for large absolute band gaps under light line. In this procedure, the unit cell of the crystal is composed of a numb...
Characterization of p-type wide band gap transparent oxide for heterojunction devices
Applied sciences Pure sciences Transparent oxide films Wide band gap semiconductors Transparent oxide Heterojunction devices
2014/11/7
Transparent p-type CuCr1-x Mgx O2 wide band gap oxide semiconductor thin films were deposited over quartz substrates by chemical spray pyrolysis technique using metalloorganic precursors. A mechanism ...
Microwave properties of the generalized Fibonacci quasi-periodic multilayered photonic band gap structure
generalized Fibonacci multilayer photonic crystal
2011/5/6
The transmission properties in microwave domains (10 GHz to 40 GHz) of generalized dielectric Fibonacci multilayer generated by the rule Sl+1 = SmlSnl–1: with a pair of positive integers m and n were ...
Multipole-cancellation mechanism for high-Q cavities in the absence of a complete photonic band gap
Multipole-cancellation mechanism high-Q cavities complete photonic band gap
2015/8/12
We describe and demonstrate a new mechanism for low radiation losses in structures lacking a complete band gap, and show how resonant cavities with Q.103 can be achieved without sacrificing stro...
Dependence on the Partial Pressure of Oxygen on the Shift in the Energy Band-gap of CdO Thin Films in the Visible Region
CdO thin films Shift in the energy band-gap Partial pressure of oxygen
2010/12/8
In this paper, the dependence on the partial pressure of oxygen of the shift in the energy band-gap of CdO thin films for the visible region is investigated from the theoretical point of view on an ex...
Photonic band-gap waveguide microcavities:Monorails and air bridges
Photonic band-gap waveguide microcavities Monorails air bridges
2015/8/12
Photonic band-gap monorail and air-bridge waveguide microcavities, operating at the wavelength regime of 1550 nm, are fabricated using GaAs-based compound semiconductors. The fabrication process invol...