# Ordered perovskite nanocrystals: a transformative platform for optoelectronic applications

## TL;DR

Ordered perovskite nanocrystals offer improved performance for optoelectronic devices by enabling better control over their structure and properties.

## Contribution

This paper introduces ordered perovskite nanocrystals (OPNCs) as a novel platform to overcome limitations of disordered colloidal systems in optoelectronics.

## Key findings

- Ordered perovskite nanocrystals enable enhanced carrier mobility and improved photoluminescence.
- Controllable self-assembly of OPNCs allows for the formation of ordered superlattices with potential for advanced device applications.
- Solvent engineering and functionalized ligand design are key strategies for achieving structural control in OPNCs.

## Abstract

Perovskite nanocrystals (PNCs) have emerged as a versatile platform for next-generation optoelectronics owing to high photoluminescence quantum yields, tunable bandgaps, and superior charge transport. Yet, the intrinsic disorder of colloidal systems and limitations of scalable processing severely restrict their performance. The structurally ordered PNCs, called herein as OPNCs, has emerged as a promising strategy to overcome the intrinsic limitations of disordered colloidal systems. Controllable self-assembly enables the formation of ordered superlattices, where collective effects such as enhanced carrier mobility, improved photoluminescence, and miniband formation can be realized. In this perspective, we highlight recent advances in solvent engineering, functionalized ligand design, and external-field modulation that provide new levers for achieving structural control. We further discuss how ordered architectures open pathways toward device applications such as pixelated light-emitting devices, low-threshold lasers, and polarization-sensitive photodetectors. By reframing self-assembly as a controllable and designable process, we propose that OPNC superlattices hold transformative potential for stable and high-performance optoelectronic applications.

Perovskite nanocrystals (PNCs) have emerged as a versatile platform for next-generation optoelectronics owing to high photoluminescence quantum yields, tunable bandgaps, and superior charge transport.