Susana Fernández de Ávila
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View article: Impact of Dimethylformamide, Tetrahydrofuran, and Dimethyl Sulfoxide on Bulk Heterojunction Organic Solar Cells’ Efficiency and Environmental Footprint
Impact of Dimethylformamide, Tetrahydrofuran, and Dimethyl Sulfoxide on Bulk Heterojunction Organic Solar Cells’ Efficiency and Environmental Footprint Open
Organic solar cells (OSCs), especially those employing bulk heterojunction architecture, present a promising avenue in renewable energy technology. These devices utilize organic materials and can be doped by solvents such as dimethylformam…
View article: PVK-based LEDs doped by cadmium sulphide nanocrystals coated by mixed thiophenol and 1-decanethiol
PVK-based LEDs doped by cadmium sulphide nanocrystals coated by mixed thiophenol and 1-decanethiol Open
Nanoparticles capped with more than one ligand have great potential to improve the properties of optoelectronic devices. To discuss this possibility, we synthesized cadmium sulphide nanocrystals coated by two different ligands, 1-decanethi…
View article: Enhancing efficiency and decelerating degradation in bulk heterojunction solar cells with N,N-Dimethylformamide cosolvent for poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate)
Enhancing efficiency and decelerating degradation in bulk heterojunction solar cells with N,N-Dimethylformamide cosolvent for poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) Open
Focused on the improvement of hole transport layer of organic solar cells based on poly(3-hexylthiophene) (P3HT)/6,6-phenil C61-butyric acid methyl ester (PCBM) blend, we studied the possibility of extending the lifetime of these devices. …
View article: Time Degradation Analysis of Organic Solar Cells Based on ITO/PEDOT:PSS/P3HT:PCBM/Al Structure
Time Degradation Analysis of Organic Solar Cells Based on ITO/PEDOT:PSS/P3HT:PCBM/Al Structure Open
Energy consumption has increased exponentially over the last decades. This fact reflects the price of the electrical energy. Consequently, the scientific community has concentrated on generation procedures from renewable sources. In this s…
View article: Improvements of Organic Photodetectors for VLC Using a New Active Layer, Focal Lens, and a Transimpedance Amplifier
Improvements of Organic Photodetectors for VLC Using a New Active Layer, Focal Lens, and a Transimpedance Amplifier Open
Beyond 5G networks, and for short distance but high-speed communication systems, there is an incipient growing interest in visible light communications (VLC). Furthermore, it is an interesting alternative within the framework of the Intern…
View article: A Low-Cost Visible Light Communications System Based on Organic Photodetection for Transmitting Images
A Low-Cost Visible Light Communications System Based on Organic Photodetection for Transmitting Images Open
In Visible Light Communication (VLC) Systems, data are transmitted by modulating light from an illumination source, that could be an ordinary lamp or light-emitting diodes (LEDs). Photovoltaic cells based on massive heterojunctions of semi…
View article: Reduced Graphene Oxide Inserted into PEDOT:PSS Layer to Enhance the Electrical Behaviour of Light-Emitting Diodes
Reduced Graphene Oxide Inserted into PEDOT:PSS Layer to Enhance the Electrical Behaviour of Light-Emitting Diodes Open
In this study, poly(9-vinylcarbazole) (PVK)-based LEDs doped with reduced graphene oxide (rGO) and cadmium sulphide (CdS) nanocrystals were fabricated by spin-coating. The hybrid LED structure was a layer sequence of glass/indium tin oxide…
View article: A Comparative Study of Theoretical Methods to Estimate Semiconductor Nanoparticles’ Size
A Comparative Study of Theoretical Methods to Estimate Semiconductor Nanoparticles’ Size Open
In this paper, we compare four different methods to estimate nanoparticle diameters from optical absorption measurements, using transmission electron microscopy (TEM) images as a reference for the nanoparticle size. Three solutions of coll…
View article: A Low-Cost IEEE 802.15.7 Communication System Based on Organic Photodetection for Device-to-Device Connections
A Low-Cost IEEE 802.15.7 Communication System Based on Organic Photodetection for Device-to-Device Connections Open
In this article, we compare two different kinds of commercial light-emitting diodes (LEDs) in transmission and organic photodetectors based on poly(3-hexylthiophene) (P3HT) and a phenyl-C61-butyric acid methyl ester (PCBM) blend used as ac…
View article: Expanded Electroluminescence in High Load CdS Nanocrystals PVK-Based LEDs
Expanded Electroluminescence in High Load CdS Nanocrystals PVK-Based LEDs Open
Immiscibility between dimethyl sulfoxide (DMSO) and polar solvents used for poly(N-vinylcarbazole) (PVK) solutions, leads to failed light-emitting diodes when colloidal cadmium sulfide (CdS) nanoparticles capped with thiophenol are incorpo…
View article: Analysing Students’ Achievement in the Learning of Electronics Supported by ICT Resources
Analysing Students’ Achievement in the Learning of Electronics Supported by ICT Resources Open
Over the past few decades, the incipient growth of technology applications sustained by electronics has contributed to the adaption of learning programs in many engineering degrees at university, fostering the presence of electronics subje…
View article: Active Learning Program Supported by Online Simulation Applet in Engineering Education
Active Learning Program Supported by Online Simulation Applet in Engineering Education Open
Nowadays education programs in engineering degrees have evolved towards advanced learning models and methodologies, which are either partially or entirely sustained by ICT (Information, Communication, and Technology) resources, and blended…