All‐Optical Switching Based on Sub‐Bandgap Photoactivation of Charge Trapping in Metal Halide Perovskites
Sign Up to like & getrecommendations! Published in 2023 at "Advanced Materials"
DOI: 10.1002/adma.202209851
Abstract: Controllable optical properties are crucial for the application of light‐emitting materials in optical devices. In this work, controllable photoluminescence in metal halide perovskite crystals is realized via photoactivation of their defects. It is found that… read more here.
Keywords: metal halide; photoactivation; optical switching; sub bandgap ... See more keywords
Harvesting Sub-bandgap Photons via Upconversion for Perovskite Solar Cells.
Sign Up to like & getrecommendations! Published in 2021 at "ACS applied materials & interfaces"
DOI: 10.1021/acsami.1c13477
Abstract: Lanthanide-based upconversion (UC) allows harvesting sub-bandgap near-infrared photons in photovoltaics. In this work, we investigate UC in perovskite solar cells by implementing UC single crystal BaF2:Yb3+, Er3+ at the rear of the solar cell. Upon… read more here.
Keywords: bandgap; perovskite solar; sub bandgap; intensity ... See more keywords
Band Tailing and Deep Defect States in CH3NH3Pb(I1–xBrx)3 Perovskites As Revealed by Sub-Bandgap Photocurrent
Sign Up to like & getrecommendations! Published in 2017 at "ACS energy letters"
DOI: 10.1021/acsenergylett.6b00727
Abstract: Organometal halide perovskite semiconductors have emerged as promising candidates for optoelectronic applications because of the outstanding charge carrier transport properties, achieved with low-temperature synthesis. Here, we present highly sensitive sub-bandgap external quantum efficiency (EQE) measurements… read more here.
Keywords: bandgap; tailing deep; sub bandgap; band tailing ... See more keywords
Spectrally Selective Mirrors with Combined Optical and Thermal Benefit for Photovoltaic Module Thermal Management
Sign Up to like & getrecommendations! Published in 2018 at "ACS Photonics"
DOI: 10.1021/acsphotonics.7b01586
Abstract: Waste heat generated during daytime operation of a solar module will raise its temperature and reduce cell efficiency. In addition to thermalization and carrier recombination, one major source of excess heat in modules is the… read more here.
Keywords: energy; module; sub bandgap; selective mirrors ... See more keywords
Thin-Film Architectures with High Spectral Selectivity for Thermophotovoltaic Cells
Sign Up to like & getrecommendations! Published in 2018 at "ACS Photonics"
DOI: 10.1021/acsphotonics.8b00508
Abstract: Thermophotovoltaic (TPV) systems are a promising technology for distributed conversion of high-temperature heat to electricity. To achieve high conversion efficiency, the transport of sub-bandgap radiation between the thermal emitter and PV cell should be suppressed.… read more here.
Keywords: high spectral; sub bandgap; thin film; spectral selectivity ... See more keywords