Listar INAM_Articles por autoría "ef941584-f910-4cea-89fc-b10690d6dc3f"
-
Analytical model for light modulating impedance spectroscopy (LIMIS) in all-solid-state p-n junction solar cells at open-circuit
American Institute of Physics (2010-01-02)Potentiostatic impedance spectroscopy (IS) is a well-known tool for characterization of materials and electronic devices. It can be complemented by numerical simulation strategies relying on drift-diffusion equations without ... -
Ballistic-like space-charge-limited currents in halide perovskites at room temperature
American Institute of Physics (2021-12-13)The emergence of halide perovskites in photovoltaics has diversified the research on this material family and extended their application toward several fields in the optoelectronics, such as photo- and ionizing-radiation ...
-
Coupling between Ion Drift and Kinetics of Electronic Current Transients in MAPbBr3 Single Crystals
American Chemical Society (2022-03-11)The optoelectronic properties of halide perovskite materials have fostered their utilization in many applications. Unravelling their working mechanisms remains challenging because of their mixed ionic–electronic conductive ...
-
Device Physics of Hybrid Perovskite Solar cells: Theory and Experiment
Wiley (2018)Perovskite solar cells (PSCs) exhibit a series of distinctive features in their optoelectronic response which have a crucial influence on the performance, particularly for long-time response. Here, a survey of recent ...
-
Direct observation of surface polarization at hybrid perovskite/Au interfaces by dark transient experiments
American Institute of Physics (2020-05-05)A distinctive feature of hybrid perovskite light-absorbing materials is the non-negligible ionic conductivity influencing photovoltaic performance and stability. Moving ions or vacancies can naturally accumulate at the ...
-
Discerning recombination mechanisms and ideality factors through impedance analysis of high-efficiency perovskite solar cells
Elsevier (2018)The ubiquitous hysteresis in the current-voltage characteristic of perovskite solar cells (PSCs) interferes in a proper determination of the diode ideality factor (n), a key parameter commonly adopted to analyze recombination ...
-
Distinction between capacitive and noncapacitive hysteretic currents in operation and degradation of perovskite solar cells
American Chemical Society (2016)Perovskite solar cells suffer from significant performance distortions under working conditions, usually known by the generic label of hysteretic effects. A classification of the fluctuations associated with current–voltage ... -
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 ...
-
Effective Ion Mobility and Long-Term Dark Current of Metal Halide Perovskites with Different Crystallinities and Compositions
Wiley (2022-12)Ion transport properties in metal halide perovskite still constitute a subject of intense research because of the evident connection between mobile defects and device performance and operation degradation. In the case of ...
-
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 ...
-
High-sensitivity high-resolution X-ray imaging with soft-sintered metal halide perovskites
Nature Research (2021-09-23)To realize the potential of artificial intelligence in medical imaging, improvements in imaging capabilities are required, as well as advances in computing power and algorithms. Hybrid inorganic–organic metal halide ...
-
Impact of Capacitive Effect and Ion Migration on the Hysteretic Behavior of Perovskite Solar Cells
American Chemical Society (2015-11)In the past five years, perovskite solar cells (PSCs) based on organometal halide perovskite have exhibited extraordinary photovoltaic (PV) performance. However, the PV measurements of PSCs have been widely recognized to ...
-
Impedance Spectroscopy of Metal Halide Perovskite Solar Cells from the Perspective of Equivalent Circuits
American Chemical Society (2021-12-08)Impedance spectroscopy (IS) provides a detailed understanding of the dynamic phenomena underlying the operation of photovoltaic and optoelectronic devices. Here we provide a broad summary of the application of IS to metal ...
-
Interfaces in Perovskite Solar Cells
Wiley (2017-11-22)Rapid improvement in photoconversion efficiency (PCE) of solution processable organometallic hybrid halide based perovskite solar cells (PSCs) have taken the photovoltaic (PV) community with a surprise and has extended ...
-
Ion-mediated hopping electrode polarization model for impedance spectra of CH3NH3PbI3
American Institute of Physics (2020-08-18)Methylammonium lead iodide (CH3NH3PbI3) is one of the most attractive materials for optoelectronic applications, and it is the most typical absorber in perovskite solar cells, which are unprecedentedly successful devices ...
-
Ionic Field Screening in MAPbBr3 Crystals Revealed from Remnant Sensitivity in X-ray Detection
American Chemical Society (2023-05-03)Research on metal halide perovskites as absorbers for X-ray detection is an attractive subject due to the optimal optoelectronic properties of these materials for high-sensitivity applications. However, the contact degradation ...
-
LiFePO4 particle conductive composite strategies for improving cathode rate capability
Elsevier (2015-05)Lithium iron phosphate (LFP) cathodes are one of the most promising candidates to find application in hybrid electric vehicle energy storage system. For this reason advances in the performance of its theoretical capacity ...
-
Ligand-free synthesis of aluminum-doped zinc oxide nanocrystals and their use as optical spacers in color-tuned highly efficient organic solar cells
Wiley (2016)The color of polymer solar cells using an opaque electrode is given by the refl ected light, which depends on the composition and thickness of each layer of the device. Metal-oxide-based optical spacers are intensively ...
-
Light intensity modulated impedance spectroscopy (LIMIS) in all-solid-state solar cells at open-circuit
Elsevier (2020)Potentiostatic impedance spectroscopy (IS) is a well-established characterization technique for elucidating the electric resistivity and capacitive features of materials and devices. For solar cells, by applying a small ...
