Spray-Deposited Oxides for Applications in Solar Cells
The objective of the research in this thesis is to develop low-cost spray pyrolysis technique to synthesize oxides thin films for applications in solar cells. Chapter 4 and 5 discuss spray-deposited dielectric oxides for their applications in Si solar cells. In Chapter 4, a successful deposition of Al2O3 is demonstrated using water as the solvent which ensures a lower cost and safer process environment. Optical, electrical, and structural properties of spray-deposited Al2O3 are investigated and compared to the industrial standard Atomic Layer Deposition (ALD) Al2O3/Plasma Enhanced Chemical Vapor Deposition (PECVD) SiNx stack, to reveal the suitability of spray-deposited Al2O3 for rear passivation and optical trapping in p-type Si Passivated Emitter and Rear Cell (PERC) solar cells. In Chapter 5, The possibility of using low-cost spray-deposited ZrO2 as the antireflection coating for Si solar cells is investigated. Optical, electrical and structural properties of spray-deposited ZrO2 films are studied and compared to the industrial standard antireflection coating PECVD SiNx. In Chapter 6, spray-deposited hematite Fe2O3 and sol-gel prepared anatase TiO2 thin films are sulfurized by annealing in H2S to investigate the band gap narrowing by sulfur doping and explore the possibility of using ternary semiconductors for their application as solar absorbers.]]>autShin, Woo JungthsTao, MengdgcGoryll, MichaeldgcWang, Qing HuapblArizona State UniversityengPartial requirement for: Ph.D., Arizona State University, 2019Includes bibliographical references (pages 89-96)Field of study: Materials science and engineeringby Woo Jung Shinhttps://hdl.handle.net/2286/R.I.5367100Doctoral DissertationAcademic thesesxiii, 96 pages : illustrations (some color)115579413741630032421157247systemIn Copyright2019TextMaterials ScienceSolar CellsOxidesSpraying--Scientific applications.SprayingSurfaces (Technology)--Scientific applications.Surfaces (Technology)