Publications by authors named "Alejandro Galan-Gonzalez"
We report on the mechanism of enhancing the luminance and external quantum efficiency (EQE) by developing nanostructured channels in hybrid (organic/inorganic) light-emitting transistors (HLETs) that combine a solution-processed oxide and a polymer heterostructure. The heterostructure comprised two parts: (i) the zinc tin oxide/zinc oxide (ZTO/ZnO), with and without ZnO nanowires (NWs) grown on the top of the ZTO/ZnO stack, as the charge transport layer and (ii) a polymer Super Yellow (SY, also known as PDY-132) layer as the light-emitting layer. Device characterization shows that using NWs significantly improves luminance and EQE (≈1.
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- * The study introduces a new method to create a P3HT-GO nanohybrid using a technique called miniemulsion synthesis, which helps maintain beneficial structural changes in the polymer chains that enhance performance.
- * The combination of P3HT and GO results in improved charge transfer efficiency in films, although it reduces certain charge transport processes, indicating a shift in how these materials can be used in future electronic devices.
Article Synopsis
- The study focuses on altering the electronic properties of ZnO nanorods by doping them with varying amounts of cobalt (Co), from 0 to 20 atomic%.
- Several techniques were used to analyze their optoelectronic behavior, revealing that surface defects play a key role in shaping their electronic characteristics.
- Co-doping not only enhances light absorption into the visible spectrum and increases surface defects but also improves the incident photon-to-current conversion efficiency (IPCE) for 1 atomic% Co-doping, suggesting potential for advanced applications.
Developing highly efficient and stable photoelectrochemical (PEC) water-splitting electrodes via inexpensive, liquid phase processing is one of the key challenges for the conversion of solar energy into hydrogen for sustainable energy production. ZnO represents one the most suitable semiconductor metal oxide alternatives because of its high electron mobility, abundance, and low cost, although its performance is limited by its lack of absorption in the visible spectrum and reduced charge separation and charge transfer efficiency. Here, we present a solution-processed water-splitting photoanode based on Co-doped ZnO nanorods (NRs) coated with a transparent functionalizing metal-organic framework (MOF).
View Article and Find Full Text PDFSemiconducting nanowires (NWs) offer exciting prospects for a wide range of technological applications. The translation of NW science into technology requires reliable high quality large volume production. This study provides an in-depth investigation of the parameters using an atomic layer deposition system to grow zinc oxide (ZnO) seed layers followed by the chemical bath deposition (CBD) of ZnO NWs to demonstrate the low-cost production of uniform single crystal wurtzite phase ZnO NWs that is scalable to large area substrates.
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