Determination of the optical constants for Cu(In,Ga)Se2 and CuxSe in the IR region
2012 (English)In: Journal of Physics D: Applied Physics, ISSN 0022-3727, E-ISSN 1361-6463, Vol. 45, no 11, 115101- p.Article in journal (Refereed) Published
The complex refractive index of CuxSe and Cu(In,Ga)Se2 has been calculated from experimental data in the wavelength region from 0.3 to 20μm. For Cu(In,Ga)Se2, the imaginary part exhibits very low values in the infrared range, whereas the real part decreases gently from 3 to 2.5. The CuxSe film is found to be conducting with increasing real and imaginary parts. It is found not to follow the Drude model. Reflectance and transmittance measurements were performed on thin films grown on soda lime glass and double polished low-doped silicon as substrates. Solutions for the complex refractive index were extracted from the measurement data using an optical model for the film and substrate. A method to map all solutions for the complex refractive index was applied to select the physically correct one.
Place, publisher, year, edition, pages
Institute of Physics Publishing (IOPP), 2012. Vol. 45, no 11, 115101- p.
optical constants, CIGS, Cu(In, Ga)Se2, CuxSe, simulation, evaporation
Other Electrical Engineering, Electronic Engineering, Information Engineering
Research subject Engineering Science with specialization in Materials Science; Engineering Science with specialization in Electronics
IdentifiersURN: urn:nbn:se:uu:diva-169798DOI: 10.1088/0022-3727/45/11/115101ISI: 000301355600002OAI: oai:DiVA.org:uu-169798DiVA: diva2:508195