نتایج جستجو برای: linear absorber

تعداد نتایج: 490005  

Journal: :Optics letters 2013
Yingran He Huixu Deng Xiangyang Jiao Sailing He Jie Gao Xiaodong Yang

An infrared perfect absorber based on a gold nanowire metamaterial cavities array on a gold ground plane is designed. The metamaterial made of gold nanowires embedded in an alumina host exhibits an effective permittivity with strong anisotropy, which supports cavity resonant modes of both electric dipole and magnetic dipole. The impedance of the cavity modes matches the incident plane wave in f...

ایزدی‌فرد, مرتضی , عالی‌دائی, مریم , قاضی, محمدابراهیم ,

The CH3NH3PbI3 is one of the most widely used and famous lead halide perovskite absorber layer for using in perovskite solar cells. One of the ways to deal with the instability problem of this perovskite structure in environmental condition is bromide doping in this composition. In this work, the structural and optical properties of the bromide doped CH3NH3PbI3 absorber layers were studied as w...

This paper presents the design parameters for a single junction In0.5Ga0.5P solar cell using Silvaco ATLAS tool. Design parameters include thickness and doping concentration of the window, emitter and absorber layers. According to the simulation results, the absorber layer has the greatest effect on cell efficiency, and the emitter and window layers are in second and third positions, respective...

2006
M. Bär A. Ennaoui M. C. Lux-Steiner

The application of Zn compounds as buffer layers was recently extended to wide-gap CuInS2 CIS based thin-film solar cells. Using an alternative chemical deposition route for the buffer preparation aiming at the deposition of a single-layer, nominal ZnS buffer without the need for any toxic reactants such as hydrazine has helped us to achieve a similar efficiency as respective CdS-buffered refer...

2015
Nikola Bednar Nadja Adamovic Alejandro Pérez-Rodríguez Philippe Lambin Takayoshi Kobayashi

In this paper we present an optical simulation of light management in Cu(In,Ga)Se2 thin-film solar cells with reduced absorber layer thickness, with the goal of absorption enhancement in the absorber layer. The light management was achieved by texturing of the substrate layer, and the conformal growth of all the following layers was assumed. Two texturing shapes have been explored: triangular a...

Journal: :Optics express 2016
Jinhwa Gene Nam Hun Park Hwanseong Jeong Sun Young Choi Fabian Rotermund Dong-Il Yeom Byoung Yoon Kim

We demonstrate an optically tunable graphene saturable absorber to manipulate the laser operation in pulsed fiber laser system. Owing to the strongly enhanced evanescent field interaction with monolayer graphene, we could realize an efficient control of modulation depth in the graphene saturable absorber by optical means through cross absorption modulation method. By integrating the tunable gra...

Journal: :Optics express 2009
Eden Rephaeli Shanhui Fan

We present theoretical considerations as well as detailed numerical design of absorber and emitter for Solar Thermophotovoltaics (STPV) applications. The absorber, consisting of an array of tungsten pyramids, was designed to provide near-unity absorptivity over all solar wavelengths for a wide angular range, enabling it to absorb light effectively from solar sources regardless of concentration....

Journal: :Sensors 2016
Kyeong-seob Kim Dongju Lee Seunghyun Eom Sungjoon Lim

A stretchable metamaterial absorber is proposed in this study. The stretchability was achieved by liquid metal and polydimethylsiloxane (PDMS). To inject liquid metal, microfluidic channels were fabricated using PDMS powers and microfluidic-channel frames, which were built using a three-dimensional printer. A top conductive pattern and ground plane were designed after considering the easy injec...

2016
Daecheon Lim Dongju Lee Sungjoon Lim

In this paper, we propose an angle- and polarization-insensitive metamaterial absorber. We design a metamaterial unit cell that is based on a split ring cross resonator (SRCR). We observe that the absorption frequency and absorption ratio are insensitive to incident angles when a via array surrounds the SRR. We demonstrate the effect of the via array using full-wave simulations by comparing the...

2012
Sri P. Mohana Reddy P. Sairam

Among the renewable sources of energy, solar energy offers a practical solution for the energy problem which is clouding the prospects of mankind. The present paper deals with the experimental investigation of parameters of a solar parabolic trough in winter conditions and to obtain optimum process parameters by Grey Relational Analysis. The experiments were planned using Taguchi’s L9 orthogona...

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