scholarly journals The role of SnO2 high resistivity transparent layer deposited onto commercial conducting glass as front contact in superstrate configuration thin films solar cells technology: influence of the deposition technique

2019 ◽  
Vol 65 (5 Sept-Oct) ◽  
pp. 554
Author(s):  
C.A. Hernández-Gutiérrez ◽  
O. Vigil Galán ◽  
S. Melo ◽  
E. Rodriguez ◽  
Yu Kudriavtsev
Keyword(s):  
Solar Cells ◽  
Contact Resistance ◽  
Photoelectron Spectroscopy ◽  
Transparent Conductive Oxide ◽  
High Resistivity ◽  
X Ray ◽  
Cdte Solar Cells ◽  
Transmission Line Method ◽  
Secondary Ion

The deposition of a high resistivity transparent (HRT) oxide between a transparent conductive oxide (TCO) and the window CdS has demonstrated the improvement of performance of CdS/CdTe solar cells, fabricated in the superstrate-configuration.  In this work the influence of the pneumatic spray pyrolysis (PSP) and magnetron sputtering techniques on the properties TCO/SnO2/CdS structure through the deposition of the intermediate SnO2 between the commercial conducting glass and CdS window is presented by means of X-ray photoelectron spectroscopy (XPS), secondary ion mass spectroscopy (SIMS), and contact resistance, calculated using transmission line method (TLM), in order to reduce the front contact resistance in devices with superstrate-configuration. The results of this work are applicable to other solar cells in the same configuration as the recent solar cells based on the compound Sb2Se3, where the use of this type of HRT has not been studied.

scholarly journals Patterning Luminescent Nanocrystalline  : Eu and  : Tb Particles Embedded in Hybrid Organosilica with Soft-Lithographic Techniques

2012 ◽  
Vol 2012 ◽  
pp. 1-11 ◽  
Author(s):  
Sajid U. Khan ◽  
Johan E. ten Elshof
Keyword(s):  
Photoelectron Spectroscopy ◽  
Substrate Surface ◽  
Solution Chemistry ◽  
Ion Scattering ◽  
X Ray Diffraction ◽  
X Ray ◽  
Low Energy Ion Scattering ◽  
Pattern Shape ◽  
Secondary Ion

Eu3+-doped LaPO4and Tb3+-doped CePO4luminescent nanoparticles embedded in hybrid organosilica were patterned by two soft lithographic techniques. The role of various parameters such as solution chemistry, thermal protocols, and modification of the mold-substrate surface energies related to pattern shape formation and adhesion to the substrates have been studied. The shrinkage of the oxide patterns and shape evolution during the process was also examined. The patterns were characterized with optical and photoluminescence (PL) microscopy, X-ray diffraction (XRD), and scanning electron microscopy (SEM). Compositional analyses were carried out with X-ray photoelectron spectroscopy (XPS), low-energy ion scattering (LEIS), and secondary ion mass spectroscopy (SIMS). The results indicated that the final patterns obtained with these two techniques for the same material have different shapes and adherence to the substrates.

scholarly journals Interface Study of ITO/ZnO and ITO/SnO2Complex Transparent Conductive Layers and Their Effect on CdTe Solar Cells

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Tingliang Liu ◽  
Xing Zhang ◽  
Jingquan Zhang ◽  
Wenwu Wang ◽  
Lianghuan Feng ◽  
...  
Keyword(s):  
Solar Cells ◽  
Photoelectron Spectroscopy ◽  
Minority Carrier ◽  
Rf Magnetron Sputtering ◽  
X Ray ◽  
Cdte Solar Cells ◽  
Carrier Recombination ◽  
Vis Spectroscopy ◽  
Interface Characteristic ◽  
Interface Study

Transparent ITO/ZnO and ITO/SnO2complex conductive layers were prepared by DC- and RF-magnetron sputtering. Their structure and optical and electronic performances were studied by XRD, UV/Vis Spectroscopy, and four-probe technology. The interface characteristic and band offset of the ITO/ZnO, ITO/SnO2, and ITO/CdS were investigated by Ultraviolet Photoelectron Spectroscopy (UPS) and X-ray Photoelectron Spectroscopy (XPS), and the energy band diagrams have also been determined. The results show that ITO/ZnO and ITO/SnO2films have good optical and electrical properties. The energy barrier those at the interface of ITO/ZnO and ITO/SnO2layers are almost 0.4 and 0.44 eV, which are lower than in ITO/CdS heterojunctions (0.9 eV), which is beneficial for the transfer and collection of electrons in CdTe solar cells and reduces the minority carrier recombination at the interface, compared to CdS/ITO. The effects of their use in CdTe solar cells were studied by AMPS-1D software simulation using experiment values obtained from ZnO, ITO, and SnO2. From the simulation, we confirmed the increase ofEff, FF,Voc, andIscby the introduction of ITO/ZnO and ITO/SnO2layers in CdTe solar cells.

scholarly journals Characterization of GaAs Solar Cells under Supercontinuum Long-Time Illumination

Materials ◽  
2021 ◽  
Vol 14 (2) ◽  
pp. 461
Author(s):  
Nikola Papež ◽  
Rashid Dallaev ◽  
Pavel Kaspar ◽  
Dinara Sobola ◽  
Pavel Škarvada ◽  
...  
Keyword(s):  
Solar Cells ◽  
Photoelectron Spectroscopy ◽  
Secondary Ion Mass Spectrometry ◽  
Electrical Characteristics ◽  
Continuous Laser ◽  
X Ray ◽  
Long Time ◽  
Degradation Test ◽  
Secondary Ion

This work is dedicated to the description of the degradation of GaAs solar cells under continuous laser irradiation. Constant and strong exposure of the solar cell was performed over two months. Time-dependent electrical characteristics are presented. The structure of the solar cells was studied at the first and last stages of degradation test. The data from Raman spectroscopy, reflectometry, and secondary ion mass spectrometry confirm displacement of titanium and aluminum atoms. X-ray photoelectron spectroscopy showed a slight redistribution of oxygen bonds in the anti-corrosion coating.

Interaction of Bovine Serum Albumin and Lysozyme with Stainless Steel Studied by Time-of-Flight Secondary Ion Mass Spectrometry and X-ray Photoelectron Spectroscopy

Langmuir ◽  
2012 ◽  
Vol 28 (47) ◽  
pp. 16306-16317 ◽  
Author(s):  
Yolanda S. Hedberg ◽  
Manuela S. Killian ◽  
Eva Blomberg ◽  
Sannakaisa Virtanen ◽  
Patrik Schmuki ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Stainless Steel ◽  
Bovine Serum Albumin ◽  
Serum Albumin ◽  
Photoelectron Spectroscopy ◽  
Bovine Serum ◽  
Secondary Ion Mass Spectrometry ◽  
Time Of Flight ◽  
X Ray ◽  
Secondary Ion

Chromium implantation in silica glass

1996 ◽  
Vol 11 (1) ◽  
pp. 229-235 ◽  
Author(s):  
E. Cattaruzza ◽  
R. Bertoncello ◽  
F. Trivillin ◽  
P. Mazzoldi ◽  
G. Battaglin ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Photoelectron Spectroscopy ◽  
Silica Glass ◽  
Electron Spectroscopy ◽  
Auger Electron ◽  
Secondary Ion Mass Spectrometry ◽  
Rutherford Backscattering Spectrometry ◽  
X Ray ◽  
Chromium Silicide ◽  
Secondary Ion

Silica glass was implanted with chromium at the energy of 35 and 160 keV and at fluences varying from 1 × 1016 to 11 × 1016 ions cm−2. In a set of chromium-implanted samples significant amounts of carbon were detected. Samples were characterized by x-ray photoelectron spectroscopy, x-ray-excited Auger electron spectroscopy, secondary ion mass spectrometry, and Rutherford backscattering spectrometry. Chromium silicide and chromium oxide compounds were observed; the presence of carbon in the implanted layers induces the further formation of chromium carbide species. Thermodynamic considerations applied to the investigated systems supply indications in agreement with the experimental evidences.

Incorporation and Role of Nitrogen During Oxynitridation of Silicon Studied by Photoelectron Spectroscopy

1999 ◽  
Vol 567 ◽  
Author(s):  
Masayuki Suzuki ◽  
Yoji Saito
Keyword(s):  
Photoelectron Spectroscopy ◽  
High Vacuum ◽  
Oxide Films ◽  
Silicon Surfaces ◽  
Gaseous Mixtures ◽  
X Ray ◽  
Initial Stage ◽  
Thermal Stability Of

ABSTRACTWe tried direct oxynitridation of silicon surfaces by remote-plasma-exited nitrogen and oxygen gaseous mixtures at 700°C in a high vacuum. The oxynitrided surfaces were investigated with in-situ X-ray photoelectron spectroscopy. With increase of the oxynitridation time, the surface density of nitrogen gradually increases, but that of oxygen shows nearly saturation behavior after the rapid increase in the initial stage. We also annealed the grown oxynitride and oxide films to investigate the role of the contained nitrogen. The desorption rate of oxygen from the oxynitride films is much less than that from oxide films. We confirmed that nitrogen stabilizes the thermal stability of these oxynitride films.

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