Title:	Modifications of effective optical properties of a-Si:H/a-SiNx:H multilayers by means of multilayer design and sublayer thickness
Authors:	Müllerová, Jarmila Šutta, Pavol Calta, Pavel Netrvalová, Marie Medlín, Rostislav
Citation:	MÜLLEROVÁ, J. ŠUTTA, P. CALTA, P. NETRVALOVÁ, M. MEDLÍN, R. Modifications of effective optical properties of a-Si:H/a-SiNx:H multilayers by means of multilayer design and sublayer thickness. OSA Continuum, 2020, roč. 3, č. 6, s. 1385-1397. ISSN: 2578-7519
Issue Date:	2020
Publisher:	Optical Society of America
Document type:	článek article
URI:	2-s2.0-85105689051 http://hdl.handle.net/11025/45530
ISSN:	2578-7519
Keywords in different language:	silicon-nitride;solar-cells;hydrogenated silicon;thin-films;light;absorbtion;SI;antireflection;superlattices;enhancement
Abstract in different language:	This paper presents a study of optical properties of two series of PECVD deposited planar a-Si:H/a-SiNx:H multilayers that are differently arranged. The first series design is symmetric consisting of samples with equidistant a-Si:H and a-SiNx:H sublayers of increasing thickness. In the second asymmetric series the thickness of a-SiNx:H sublayers remains constant and the thickness of a-Si:H sublayers changes to represent materials with changing a-Si:H/a-SiNx:H content ratio. From transmittance measurements refractive indices, absorption coefficients and optical band gaps were extracted and compared. The importance of the knowledge of wavelength-dependent refractive indices and absorption coefficients was demonstrated in the calculations of the absorptance under the Yablonovitch limit and of total relative absorbed solar energy. The total absorbed solar energy was commented with respect to a specific multilayer design.
Rights:	© Optica Publishing Group
Appears in Collections:	Články / Articles (RAM) OBD

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