LEAD HALIDE PEROVSKITE FOR OPTOELECTRONIC APPLICATIONS

Abstract

There are challenges to making perovskite-silicon tandem solar cells, such as reflection loss from the top cell's surface, parasitic absorption, electrical loss, and current alignment. In addition, there are also difficulties in producing highly transparent perovskite solar cells for near-infrared transmittance. As a whole, this work demonstrates the development of transparent perovskite solar cells with high bifacial efficiencies and high stabilities for four-tandem solar cell applications. In addition, their properties, like high photoluminescence quantum efficiency and tunable direct bandgaps, make them promising candidates for light-emitting diodes (LEDs). The color of LEDs is tunable from 790 nm (Near Infrared region) to 410 (Near ultra-violate region), covering the full wavelength of visible light. More importantly, the emitted lights possess narrow full-width at half-maximum (FWHM), enabling them to be promising candidates for technique nowadays such as display, IR-imaging, facial recognition, augmented reality.