Perovskite-sensitized near-infrared-to-green upconversion

Abstract

In one aspect, the disclosure a system for near infrared-to-green upconversion of light in solid-state optoelectronic devices, the system comprising a bulk semiconductor layer capable of absorbing a near-infrared first wavelength of light and an organic annihilator in contact with the bulk semiconductor, wherein the organic annihilator is capable of upconversion via triplet-triplet annihilation from triplet states in the organic annihilator to produce green light at a second wavelength. In one aspect, the bulk semiconductor can be a formamidinium-based metal halide perovskite and the organic annihilator can be a polycyclic aromatic hydrocarbon or derivative thereof. Also disclosed are devices incorporating the same and methods for upconverting near infrared light to green light.

Dependencies are inferred from the claim text.