Stability and Applications of Perovskite Quantum Dots in Optoelectronic Devices

Perovskite quantum dots (PQDs) have emerged as versatile light‐emitting materials combining tunable emission wavelengths, high photoluminescence quantum yields and facile solution processability. Their crystalline structure and ionic composition enable spectral adjustment across the visible spectrum, making them attractive for light-emitting diodes, display backlights and laser sources. However, the inherent sensitivity of lead halide perovskites to moisture, heat and light has hindered their practical deployment. Recent strategies focus on surface passivation, inorganic and polymer encapsulation, and composite formation to enhance thermal, moisture and photostability without compromising optical performance. These advances have enabled the demonstration of waterproof luminescent textiles, micro-LED colour converters, self-healing luminescent films and robust light-guide composites. Collectively, they point towards a future in which perovskite quantum dots can be integrated into commercial optoelectronic devices with lifetimes and durability comparable to established inorganic phosphors.

Research from Nature Portfolio

Large‐area luminescent textiles have been fabricated by electrospinning composite fibres in which perovskite nanocrystals are sandwiched between polymer, cyclodextrin and silane layers. These textiles retain narrow‐band photoluminescence under ambient conditions for thousands of hours, resist water immersion and high temperatures, and prevent lead leaching during mechanical stress, opening prospects for wearable and marine-rescue lighting.

A self-healing luminescent composite inspired by marine organisms has been realised by embedding perovskite quantum dots within a fluorine elastomer matrix. The material exhibits exceptional toughness, stretchability and autonomous repair in both dry and harsh aqueous environments, while maintaining bright emission and mechanical integrity after prolonged exposure to acidic, basic and saline media.

Stability and Applications of Perovskite Quantum Dots in Optoelectronic Devices publication trend

The graph below shows the total number of articles in stability and applications of perovskite quantum dots in optoelectronic devices across all publications each year (not limited to Nature Index journals).

Technical terms

Perovskite quantum dot (PQD): A nanoscale semiconductor particle with a crystal structure similar to the mineral perovskite, offering size-tunable optical properties and high emission efficiency.

Photoluminescence quantum yield (PLQY): The ratio of emitted photons to absorbed photons in a luminescent material, indicating its efficiency.

Encapsulation: The process of surrounding quantum dots with protective shells or matrices (such as silica, polymers or metal oxides) to enhance their stability against environmental stress.

Light-guide plate (LGP): A transparent panel used in display technology to distribute light uniformly, often enhanced with scattering particles or phosphors for improved brightness and uniformity.

Self-healing polymer matrix: A polymer network designed to autonomously repair mechanical damage, often through reversible bonds or dynamic interactions, while preserving embedded functionalities.

References

1. Large-area waterproof and durable perovskite luminescent textiles. Nature Communications (2023).
2. Tough, stable and self-healing luminescent perovskite-polymer matrix applicable to all harsh aquatic environments. Nature Communications (2022).
3. Ultrastable and highly efficient CsPbBr3 composites achieved by dual‐matrix encapsulation for display devices. InfoMat (2023).
4. Bulk CsPbClxBr3-x (1 ≤ x ≤ 3) perovskite nanocrystals/polystyrene nanocomposites with controlled Rayleigh scattering for light guide plate. Light: Science & Applications (2023).
5. Ultra-stable, Solution-Processable CsPbBr3‑SiO2 Nanospheres for Highly Efficient Color Conversion in Micro Light-Emitting Diodes. ACS Energy Letters (2022).