Dielectric measurements and characterization of impurities of photovoltaic cell materials at millimeter and THz waves

Author

Afsar, Mohammed N. ; Chao, Liu ; Korolev, Konstantin A.

Author_Institution

Electr. & Comput. Eng. Dept., Tufts Univ., Medford, MA, USA

fYear

2011

fDate

2-7 Oct. 2011

Firstpage

1

Lastpage

2

Abstract

Transmittance, Refractive Index, Absorption coefficient, Real and Imaginary part of complex dielectric permittivity data for several Silicon, Silicon Carbide, Gallium Arsenide, Cadmium Telluride and Copper Indium Selenide specimens were measured using Dispersive Fourier Transform Spectroscopy and Free Space Quasi-optical Spectrometer powered by several Backward Wave Oscillators for the characterization of photovoltaic cell materials at Millimeter and THz Waves. Precision measurements easily identifies impurities present in these materials. Data for several silicon carbide (SiC) specimens and powdered Cadmium Telluride specimen over a broad millimeter wave range are shown.

Keywords

absorption coefficients; cadmium compounds; copper compounds; dielectric measurement; gallium arsenide; millimetre wave measurement; permittivity; photovoltaic cells; refractive index; silicon compounds; terahertz materials; THz waves; absorption coefficient; backward wave oscillator; cadmium telluride; copper indium selenide; dielectric measurement; dielectric permittivity; dispersive Fourier transform spectroscopy; free space quasioptical spectrometer; gallium arsenide; impurity characterization; millimeter wave; photovoltaic cell material; refractive index; silicon carbide; transmittance; Dielectric measurements; Dielectrics; Materials; Millimeter wave measurements; Permittivity; Photovoltaic cells; Silicon carbide;

fLanguage

English

Publisher

ieee

Conference_Titel

Infrared, Millimeter and Terahertz Waves (IRMMW-THz), 2011 36th International Conference on

Conference_Location

Houston, TX

ISSN

2162-2027

Print_ISBN

978-1-4577-0510-6

Electronic_ISBN

2162-2027

Type

conf

DOI

10.1109/irmmw-THz.2011.6104890

Filename

6104890