In Situ Ambient Preparation of Perovskite-Poly(<scp>l</scp>-lactic acid) Phosphors for Highly Stable and Efficient Hybrid Light-Emitting Diodes

Metal halide perovskites (MHPs) based phosphor-converted light-emitting diodes (pc-LEDs) are limited by the low MHP stability under storage/operation conditions. A few works have recently stablished in-situ synthesis of MHPs into polymer matrices as an effective strategy to enhance with a low-cost fabrication. However, this is within petrochemical-based polymers. Herein, first ambient preparation highly luminescent and stable MHPs-bio-polymer filters (MAPbBr3 nanocrystals emitter poly(L-lactide acid) (PLLA) matrix) arbitrary areas (up ca. 300 cm2) reported. The MAPbBr3-PLLA phosphors feature narrow emission (25 nm) excellent photoluminescence quantum yields (more than 85%) stabilities storage, water, thermal stress. This corroborated in green pc-LEDs featuring efficiency roll-off, operational 600 h, high luminous efficiencies 65 lm W-1 that stand out prior art (e.g., average lifetime 200 h at 50 W-1). further exploited fabricate white-emitting 73 x/y CIE color coordinates values 0.33/0.32. Overall, work stablishes straightforward (one-pot/in-situ) (ambient/room temperature) efficient MHP-bio-polymer for performing more sustainable lighting devices.