Stability of electroluminescent perovskite quantum dots light‐emitting diode

Colloidal quantum dots (QDs) are considered to be a promising candidate for light-emitting diodes (LEDs) applications considering their wide gamut range, simple color tuning, compatibility with large-size and flexible substrates. Benefiting from the distinguished properties such as high photoluminescence efficiency (PLQY), narrow emission linewidth, low material cost, perovskite QDs have attracted attention researchers. Despite tremendous progress has been made during past several years, QDs-based LEDs (QLEDs) still plagued by instability arising operation of QLEDs, which not studied systematically. In this review, origin QLEDs is attributed vulnerability materials constituent layers. Simultaneously, effective strategies improve durability summarized, component engineering, ligand passivation, fabrication robust uniform layers, well adopt appropriate device structures driving modes. Ultimately, we put forward insights on future research direction prospects in practical applications.