Carbon Nanoparticles as Versatile Auxiliary Components of Perovskite‐Based Optoelectronic Devices

Abstract

Metal halide perovskite-based optoelectronics has experienced an unprecedented development in the last decade, while further improvements of efficiency, stability, and economic gains of such devices require novel engineering concepts. The use of carbon nanoparticles as versatile auxiliary components of perovskite-based optoelectronic devices is one strategy that offers several advantages in this respect. In this review, first, a brief introduction is offered on metal halide perovskites and on the major performance characteristics of related optoelectronic devices. Then, the versatility and merits of different kinds of carbon nanoparticles, such as graphene quantum dots and carbon dots, are discussed. The tunability of their electronic properties is focused upon, their interactions with perovskite components are analyzed, and different strategies of their implementation in optoelectronic devices are introduced, which include solar cells, light-emitting diodes, luminescent solar concentrators, and photodetectors. It is shown how carbon nanoparticles influence charge carriers extraction and transport, promote perovskite crystallization, allow for efficient passivation, block ion migration, suppress hysteresis, enhance their environmental stability, and thus improve the performance of perovskite-based optoelectronic devices.

Manipulation of time-dependent multicolour evolution of X-ray excited afterglow in lanthanide-doped fluoride nanoparticles

“…Despite significant achievements made in tuning afterglow intensity, duration, and wavelengths mainly through modifying chemical compositions 16 – 18 , it is hard to realize time-dependent afterglow colour evolution owing to the difficulty in blocking energy transfer between different activators 19 – 22 . For most previously reported long persistent phosphors, such as aluminates 23 , 24 , silicates 25 , 26 , sulfides 27 , 28 , and carbon dots 29 , 30 , the afterglows exhibit a time-dependent intensity decrease, while the spectral profiles remain unchanged. In these systems, although the afterglow intensity decreases over time in contrast to photoluminescence which is stable, its output colour remains unchanged.…”

Micro‐Nano Structure Functionalized Perovskite Optoelectronics: From Structure Functionalities to Device Applications

“…The advantage of micro-nano structure in SCs and PDs, LEDs, and lasers is to enhance the light trapping, light extraction, and light modulation, respectively. [108][109][110] Meanwhile, introducing micro-nano structure can provide the novel optical functionalities, such as the anisotropy optical properties. [111] For optoelectrics, micro-nano structure is conducive to the collection of photogenerated carrier due to the shortened diffusion length.…”

A Review on Nanoparticles, Synthesis, Characterization, Current Applications and Future Perspectives

“…Many of nanoparticles that synthesized artificially can cause certain mutations in organism that untimely leads to certain defects in genome. One of the example of that health effects of nanoparticles on the human body is the silver nanoparticles [29,30].…”