A5007217973- Chalcogenide Semiconductor Thin Films
- Quantum Dots Synthesis And Properties
- Semiconductor Quantum Structures and Devices
- Copper-based nanomaterials and applications
- TiO2 Photocatalysis and Solar Cells
- Advanced Semiconductor Detectors and Materials
- Semiconductor materials and interfaces
- Perovskite Materials and Applications
- solar cell performance optimization
- Pigment Synthesis and Properties
- Gas Sensing Nanomaterials and Sensors
- Ion-surface interactions and analysis
- Glass properties and applications
- Semiconductor materials and devices
Universidad Nacional de Colombia
2014-2023
Technological University of Pereira
2020
Polycrystalline thin film solar cells made with absorber materials such as CdTe, CIGS, CZTS and metalorganic halides (perovskites) are currently important alternatives for the silicon cell technology, which still dominates photovoltaic market. Then, it is to have tools can be used design this kind of cells. For purpose, we developed a unified simple analytical model that applied The based on basic physics hetero-junction devices, but takes into consideration space charge region extend along...
Modelling solar cells has, in recent years, become a fundamental tool for their optimum design. Here, we present an optical study of CuInGaSe2 (CIGS) order to improve them by selecting the appropriate transparent conductive oxide (TCO) layer thickness. The system interest our case was glass/TCO/CdS/CIGS/Mo, considering radiation incident perpendicular cell from glass and taking into account absorbent nature TCO, CdS CIGS layers. reflectance this layered calculated using matrix method three...
Abstract Technological developments for improving the performance of conventional solar cells have become a topic great interest in recent years. For instance, concentrators, new anti-reflective coatings, and Luminescent Down-Shifting Layers (LDS), among different techniques been used past. The latter is an attractive option because LDS layer has property increasing photon flux density appropriate wavelength range on top cell device with possibility photo-current density. Then, this work we...
The preparation of (Cu,Se)(In,N) thin films by r.f magnetron sputtering technique opens an interesting research area with potential application in solar cells. In this work, we presented a systematic study growth and characterization CuSe layers CuSe/In deposited on glass substrates varying the power source substrate temperature. effects experimental parameters morphology optical properties were investigated XRD, UV-Visible SEM. results show that samples are polycrystalline hexagonal...
Abstract The formation of thin films based on TiO 2 plays a fundamental role in research involving solar energy (solar cell and thermal collectors) from the part environmental (photocatalysis-artificial photosynthesis as source clean energy). In this sense, our work has focused experimental details directed towards method obtaining, for which precursor salt Titanium Oxyacetylacetonate (IV) (Sigma Aldrich with 90 % purity) it been used dissolved methyl alcohol (Fisher Chemical 99.8% 0.05 M...
This paper is focused on the preparation of InGaAs thin films GaAs substrates by r.f. magnetron sputtering technique, using power as control means for formation different stoichiometries. Results X-ray and Raman spectroscopy allowed corroborating InxGa1-xAs in concentrations, identifying peaks associated with crystallographic planes (X-rays) characteristic vibrational phonon modes (Raman). An analysis performed Secondary Ion Mass Spectroscopy (SIMS) Photoelectron (XPS) techniques, discussing...
Modeling solar cells to determine their performance has become a fundamental tool for the optimal design of this kind devices. Solar cell models help optimizing fabrication parameters so that increased efficiencies can be achieved, reducing development and production costs. With purpose, we have developed unified analytical model designing thin film takes into account specific differences associated as compared volumetric conventional cells. In work, apply Cu <sub...