Optimization of LPCVD Deposition Conditions of Silicon-Rich Silicon Nitride to Obtain Suitable Optical Properties for Photoluminescent Coating

Silicon nitride is a commonly used material for ceramic applications and in the fabrication processes of integrated circuits (ICs). It has also increased in interest from the scientific community for use as a functional coating due to its physical, mechanical, electrical, and optoelectronic properti...

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Veröffentlicht in:Coatings (Basel) 2024-11, Vol.14 (11), p.1383
Hauptverfasser: Uribe González, Francisco, Monfil Leyva, Karim, Moreno Moreno, Mario, Morales Sánchez, Alfredo, Muñoz Zurita, Ana L., Luna López, José A., Carrillo López, Jesús, Hernández de la Luz, José A. D., Salazar Valdez, Alma S. L.
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container_issue 11
container_start_page 1383
container_title Coatings (Basel)
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creator Uribe González, Francisco
Monfil Leyva, Karim
Moreno Moreno, Mario
Morales Sánchez, Alfredo
Muñoz Zurita, Ana L.
Luna López, José A.
Carrillo López, Jesús
Hernández de la Luz, José A. D.
Salazar Valdez, Alma S. L.
description Silicon nitride is a commonly used material for ceramic applications and in the fabrication processes of integrated circuits (ICs). It has also increased in interest from the scientific community for use as a functional coating due to its physical, mechanical, electrical, and optoelectronic properties. In particular, silicon-rich silicon nitride (SRSN) has been considered in the photovoltaic industry as a down-conversion film for solar cells. In this work, SRSN films have been obtained by the Low-Pressure Chemical Vapor Deposition (LPCVD) technique at low to moderate deposition temperatures with a variation in the precursor gas pressure ratio. The SRSN films showed a wide photoluminescence (PL) in the visible region (without a high-deposition temperature or annealing process) and suitable optical properties (refractive index and absorption in the UV) to be used as photoluminescent coating on silicon solar cells. The absence of high-deposition temperatures could preserve the original structure of silicon solar cells, once the SRSN layer was applied. In addition, control of the reactive gas pressure ratio and deposition temperature showed an influence on the refractive index, the surface roughness, and the PL emission.
doi_str_mv 10.3390/coatings14111383
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source MDPI - Multidisciplinary Digital Publishing Institute; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; Alma/SFX Local Collection
subjects Ceramic coatings
Chemical vapor deposition
Coatings
Fourier transforms
Gas pressure
Integrated circuits
Low pressure
Morphology
Nitrides
Optical properties
Optimization
Optoelectronics
Photoluminescence
Photovoltaic cells
Pressure ratio
Refractivity
Semiconductor industry
Silicon
Silicon compounds
Silicon nitride
Silicon wafers
Solar cells
Spectrum analysis
Surface roughness
Temperature
title Optimization of LPCVD Deposition Conditions of Silicon-Rich Silicon Nitride to Obtain Suitable Optical Properties for Photoluminescent Coating
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