Listar por tema "degradation"
Mostrando ítems 1-11 de 11
-
Crystalline Clear or Not: Beneficial and Harmful Effects of Water in Perovskite Solar Cells
Wiley (2019-10-16)Clarification of how water affects the photovoltaic performance of perovskite solar cells is one of the major challenges to successfully develop a large‐scale low‐cost fabrication process. Many authors have reported ... -
Degradation Analysis of Triple-Cation Perovskite Solar Cells by Electrochemical Impedance Spectroscopy
American Chemical Society (2022)In this work, the electrical properties of different triple-cation compositions with the formula Cs0.05FA1–XMAXPb(I1–XBrX)3 have been analyzed using electrochemical impedance spectroscopy. The perovskite solar cells were ... -
Evaluación de los cambios en los resíduos sólidos urbanos en un vertedero durante el proceso de biodegradación
Universidad de Guanajuato (2017)Cuando los residuos son depositados en un relleno sanitario se inicia un proceso de degradación que depende de multitud de factores, tales como la cobertura, la temperatura, la humedad, la precipitación, etc. Estos factores ... -
Homeopathic Perovskite Solar Cells: Effect of Humidity during Fabrication on the Performance and Stability of the Device
American Chemical Society (2018-02)Rapid degradation in humid environments is a major drawback of methylammonium lead iodide (CH3NH3PbI3), which is the archetypical component of perovskite solar cells. In this work, we have investigated the aging and ... -
Influence of crystallinity on the fracture toughness of poly(lactic acid)/montmorillonite nanocomposites prepared by twin-screw extrusion.
© 2010 Wiley Periodicals (2011-04)The aim of this work was to study the effect of crystallinity degree on the thermal, mechanical, and fracture properties of poly(lactic acid)/organomodified montmorillonite (PLA/OMMT) nanocomposites. Samples with two ... -
Interfacial and Bulk Operation of Polymeric Solar Cells by Optoelectronics and Structural Techniques
Universitat Jaume I (2014-07-15)This Ph.D. Thesis focuses on the investigation of organic photovoltaic (OPV) technology, especially in aspects of experimental device processing, and optoelectronic and electrical characterization on OPV devices to be ... -
Ionic Reactivity at Contacts and Aging of Methylammonium Lead Triiodide Perovskite Solar Cells
Wiley (2016-02)Hybrid lead halide perovskites have reached very large solar to electricity power conversion efficiencies, in some cases exceeding 20%. The most extensively used perovskite-based solar cell configuration comprises CH3NH3PbI3 ... -
Nanoscale mapping by electron energy-loss spectroscopy reveals evolution of organic solar cell contact selectivity
Elsevier (2015)Organic photovoltaic (OPV) devices are on the verge of commercialization being long-term stability a key challenge. Morphology evolution during lifetime has been suggested to be one of the main pathways accounting for ... -
Selective Synthesis of α-, β-, and γ-Ag2WO4 Polymorphs: Promising Platforms for Photocatalytic and Antibacterial Materials
American Chemical Society (2021-01-18)Silver tungstate (Ag2WO4) shows structural polymorphism with different crystalline phases, namely, orthorhombic, hexagonal, and cubic structures that are commonly known as α, β, and γ, respectively. In this work, these ... -
Shelf Life Degradation of Bulk Heterojunction Solar Cells: Intrinsic Evolution of Charge Transfer Complex
Wiley (2015)Achievement of long-term stability of organic photovoltaics is currently one of the major topics for this technology to reach maturity. Most of the techniques used to reveal degradation pathways are destructive and/or do ... -
Studying the degradation of polyhydroxybutyrate-co-valerate during processing with clay-based nanofillers
Wiley (2009)Polyhydroxybutyrate-co-valerate (PHBV) is attracting interest as a new material for packaging applications and nanoparticulate layered silicates are being increasingly explored as a way to improve PHBV film properties. In ...