Tunable electrical properties of TaNx thin films grown by ionized physical vapor deposition

2014 ◽  
Vol 32 (5) ◽  
pp. 051202 ◽  
Author(s):  
Miri Choi ◽  
Catherine Dubourdieu ◽  
Andrew J. Kellock ◽  
Kam Leung Lee ◽  
Richard A. Haight ◽  
...  
Keyword(s):  
Thin Films ◽  
Electrical Properties ◽  
Vapor Deposition ◽  
Physical Vapor Deposition ◽  
Ionized Physical Vapor Deposition

Characterizations of CNx thin films made by ionized physical vapor deposition

2005 ◽  
Vol 482 (1-2) ◽  
pp. 192-196 ◽  
Author(s):  
F. Tétard ◽  
P. Djemia ◽  
M.P. Besland ◽  
P.Y. Tessier ◽  
B. Angleraud
Keyword(s):  
Thin Films ◽  
Vapor Deposition ◽  
Physical Vapor Deposition ◽  
Ionized Physical Vapor Deposition

scholarly journals Characterization of Thin MAPb(I1–xBrx)3 Alloy Halide Perovskite Films Prepared by Sequential Physical Vapor Deposition

2021 ◽  
Vol 9 ◽  
Author(s):  
Juvet Nche Fru ◽  
Nolwazi Nombona ◽  
Mmantsae Diale
Keyword(s):  
Thin Films ◽  
Titanium Dioxide ◽  
Solar Cells ◽  
Electrical Properties ◽  
Charge Carrier ◽  
Vapor Deposition ◽  
Physical Vapor Deposition ◽  
Carrier Mobility ◽  
Charge Carrier Mobility ◽  
Current Voltage

Lead iodide (PbI2)-rich methylammonium lead bromide-iodide (MAPb(I1–xBrx)3) thin-films were prepared by sequential physical vapor deposition of methylammonium lead tri-bromide (MAPbBr3) on methylammonium lead tri-iodide (MAPbI3) bottom layer. The structural, optical, morphological, and electrical properties of the thin-films were studied as the thickness of methylammonium bromide (MABr) was increased from 300 to 500 nm. X-ray diffractograms confirmed transformation of tetragonal MAPbI3(x is 0.0) to the cubic-like structure of MAPbBr3 (x is 1.0) as MAPb(I1–xBrx)3 (x = 0.89–0.95) and PbI2 were formed. The bromine mole ratio x decreased as MABr thickness increased. UV-Vis absorption spectra showed that the bandgap of the thin alloy film decreased from 2.21 to 2.14 eV as x decreased. Scanning electron micrographs depicted densely packed grains that entirely covered the substrate and contained very few pinholes. The average grain size increased from 150 to 320 nm as x decreased. Electrical properties showed high charge carrier mobility that increased linearly with MABr thickness. FTO/MAPb(I1–xBrx)3/Au devices using fluorine-doped tin oxide (FTO) as substrate and gold (Au) as contacts were fabricated and current-voltage characteristics were determined. Space-charge-limited current theory was applied to charge carrier mobility and trap density of MAPb(I1–xBrx)3 thin-films. The charge carrier mobility increased as x decreased. The power conversion efficiency (PCE) of FTO/MAPbBr3/Au, FTO/MAPb(I0.11Br0.89)3/Au and FTO/MAPbI3/Au solar cells were 0.56, 0.62, and 1.15%. Devices including titanium dioxide compact layer (c-TiO2) and titanium dioxide mesoporous (m-TiO2) layer as electron transport layers were also fabricated for the application of Mott-Shottky (M-S) theory. Analyses of dark current-voltage and capacitance-voltage curves of FTO/c-TiO2/m-TiO2/MAPb(I0.11Br0.89)3 solar cells revealed a sizeable built-in voltage (Vbi) of 1.6 V and an accumulation of charge at interfaces for voltages greater than 0.2 V, respectively. Similar analyses for FTO/TiO2/MAPbI3/Au showed a small Vbi of 0.7 V and no charge carrier at interfaces. The work paves a way for reproducible growth of MAPb(I1–xBrx)3 for solar cells and sheds more light on the degree of ion migration in mixed halide and pure halide perovskites.

Cu seed step coverage evolution with target lifetime for long-throw self ionized physical vapor deposition chambers

2022 ◽  
pp. 111717
Author(s):  
Elisa Pegoraro ◽  
Alberto Perrotta ◽  
Gianpaolo Lorito ◽  
Laura Bertarelli ◽  
Benoit-Noel Bozon ◽  
...  
Keyword(s):  
Vapor Deposition ◽  
Physical Vapor Deposition ◽  
Step Coverage ◽  
Ionized Physical Vapor Deposition

Localized Physical Vapor Deposition via Focused Laser Spike Dewetting of Gold Thin Films for Nanoscale Patterning

2018 ◽  
Vol 2 (1) ◽  
pp. 586-597 ◽  
Author(s):  
Tianxing Ma ◽  
Michael P. Nitzsche ◽  
Arielle R. Gamboa ◽  
Valeria Saro-Cortes ◽  
Jonathan P. Singer
Keyword(s):  
Thin Films ◽  
Vapor Deposition ◽  
Physical Vapor Deposition ◽  
Nanoscale Patterning ◽  
Gold Thin Films
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