ListarInstitute of Advanced Materials (INAM) por tema "perovskite"
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Abiotic depletion and the potential risk to the supply of cesium
Elsevier (2020-10)The petroleum exploration industry is the largest end user of cesium where it is employed in oil well drilling fluid. It has recently been broadly reported that the inclusion of cesium into perovskite for photovoltaics and ... -
Analysis of the UV ozone-treated SnO2 electron transporting layer in planar perovskite solar cells for high performance and reduced hysteresis
Wiley - Blackwell (2019)Tin oxide (SnO2) is widely used as electron transporting layer (ETL) in perovskite solar cells (PSCs) because its good transparency, band alignment to perovskite and stability. The interface between the ETL and the ... -
C60 Thin Films in Perovskite Solar Cells: Efficient or Limiting Charge Transport Layer?
American Chemical Society (2022-02-28)In this work, we identify the importance of C60 and compact-TiO2 (cTiO2) as electron transport layers on the device performance of coevaporated n–i–p perovskite solar cells. We found (1) a synergetic effect between both ... -
Crystalline-Size Dependence of Dual Emission Peak on Hybrid Organic Lead-Iodide Perovskite Films at Low Temperatures
American Chemical Society (2018-09)In this work, we have investigated the crystalline-size dependence of optical absorption and photoluminescence emission of CH3NH3PbI3 films, which is necessary to identify the potential practical applications of the gadgets ... -
Deciphering the Role of Quantum Dots Size in the Ultrafast Charge Carrier Dynamics at the Perovskite-Quantum Dots Interface
Royal Society of Chemistry (2020-09)Understanding the behaviour of electrons and holes (e, h) diffusion and transfer at the interfaces of photoexcited hybrid materials at different densities of photoexcited charge carriers is paramount to the development of ... -
Defect tolerant perovskite solar cells from blade coated non-toxic solvents
Royal Society of Chemistry (2018-09)The process of crystallization of lead halide perovskites by industrially relevant techniques involving non-toxic solvents is not understood completely and needs improvement. To this date, devices with the highest efficiency ... -
Directional and Polarized Lasing Action on Pb-free FASnI3 Integrated in Flexible Optical Waveguide
(2022)In this work, high-quality FASnI3 (FA, formamidinium) lead-free perovskite thin films are successfully incorporated in a flexible polyethylene terephthalate (PET) substrate to demonstrate amplified spontaneous emission ... -
Do Capacitance Measurements Reveal Light-Induced Bulk Dielectric Changes in Photovoltaic Perovskites?
American Chemical Society (2018-06)Several studies have identified complex interactions between photogenerated carriers and the crystal lattice in perovskite materials for photovoltaics, which are regarded to have an inherently soft character. Light is known ... -
Effect of Environmental Humidity on the Electrical Properties of Lead Halide Perovskites
ACS (2018-12)In large quantities, water is detrimental to lead halide perovskite solar cells, mainly because of the decomposition of the perovskite layer. In contrast, the presence of small quantities of water has been observed to play ... -
Effects of Frequency Dependence of the External Quantum Efficiency of Perovskite Solar Cells
American Chemical Society (2018-05)Perovskite solar cells are known to show very long response time scales, on the order of milliseconds to seconds. This generates considerable doubt over the validity of the measured external quantum efficiency (EQE) and ... -
Enhanced nanoscopy of individual CsPbBr3 perovskite nanocrystals using dielectric sub-micrometric antennas
AIP Publishing (2020-02-11)We demonstrate an efficient, simple, and low-cost approach for enhanced nanoscopy in individual green emitting perovskite (CsPbBr3)nanocrystals via TiO2dielectric nanoantenna. The observed three- to five-fold ... -
Formation Criteria of High Efficiency Perovskite Solar Cells in Ambient Conditions
Royal Society of Chemistry (2017)The field of lead halide perovskites for solar cell applications has recently reported impressive power conversion (PCE) above 22 % using complex mixed cation formulations. Very importantly, highest PCE have been obtained ... -
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 ... -
Impact of core-shell perovskite nanocrystals for LED applications: successes, challenges, and prospects
The Royal Society of Chemistry (2023-07-24)Perovskite nanocrystals (PeNCs) synthesized by colloidal solution methods are an outstanding case of study due to their remarkable optical features, different from their bulk counterpart, such as a tuneable band gap and ... -
Impedance spectroscopy of perovskite/contact interface: Beneficial chemical reactivity effect
AIP Publishing (2019-09-25)Understanding chemical reactivity of lead halide perovskite materials with contacts is crucial to improve the stability of these optoelectronic devices. The study of the physical and chemical interactions at the interfacial ... -
In situ ethanolamine ZnO nanoparticle passivation for perovskite interface stability and highly efficient solar cells
MDPI (2022-02-28)Zinc oxide (ZnO) has interesting optoelectronic properties, but suffers from chemical instability when in contact with perovskite interfaces; hence, the perovskite deposited on the top degrades promptly. Surface passivation ... -
In the Limelight: Perspective Collections on Perovskites
American Chemical Society (2017-08)In our inaugural “ In the Limelight ” Viewpoint, we revisited five high-impact papers that were published in The Journal of Physical Chemistry Letters ( JPC Letters ) in 2014, and we noted that four of the five were written ... -
Increasing the Performance and Stability of Red-Light-Emitting Diodes Using Guanidinium Mixed-Cation Perovskite Nanocrystals
American Chemical Society (2023-05-09)Halide perovskite nanocrystals (PNCs) exhibit growing attention in optoelectronics due to their fascinating color purity and improved intrinsic properties. However, structural defects emerging in PNCs progressively hinder ... -
Inductive Loop in the Impedance Response of Perovskite Solar Cells Explained by Surface Polarization Model
American Chemical Society (2017-03)The analysis of perovskite solar cells by impedance spectroscopy has provided a rich variety of behaviors that demand adequate interpretation. Two main features have been reported: First, different impedance spectral arcs ... -
Interaction between Colloidal Quantum Dots and Halide Perovskites: Looking for Constructive Synergies
American Chemical Society (2019-02-19)Colloidal quantum dots (QDs) have received extensive attention during the last few decades because of their amazing properties emerging from quantum confinement. In parallel, halide perovskites have attracted attention ...