Aggregation Control, Surface Passivation, and Optimization of Device Structure toward Near‐Infrared Perovskite Quantum‐Dot Light‐Emitting Diodes with an EQE up to 15.4%

Abstract

reworded to clarify the intended meaning and the presentation of the unit in the footnote of Table 2 was revised.

Core–shell carbon-polymer quantum dot passivation for near infrared perovskite light emitting diodes

“…EQE was measured to be 6% and 9% for the FAPbI 3 coated on the pristine and BDP modified SnO 2 ETL, respectively, which was increased to 10% and 14% for the PCD PeLEDs based on the SnO 2 and SnO 2 /BDP substrates, respectively (figure 7(d)). Table 1 provides a detailed comparison on the current advancement in the FAPbI 3 perovskites PeLEDs concluding the performance of our device and recent state-of-the-art PeLEDs [43][44][45][46][47][48][49][50][51][52][53][54]. The optimized devices also showed reduced efficiency roll-off compared to the reference with no modification and additive (figure 7(d)).…”

Tiny spots to light the future: advances in synthesis, properties, and application of perovskite nanocrystals in solar cells

“…Another strategy is to use hydrophobic conjugated molecules on the surface, such as phenylethylamine and its derivatives, which will replace some ligands on the NC surface. 219,248,249 These molecules are capable of improving the charge carrier delocalization in the PNC, which in turn improves the charge separation efficiency. 250 Also, AX salts (A = guanidinium, formamidinium) have been used in the post-passivation of the PNC layer.…”

Cr3+-Doped NIR Phosphor with Well-Defined Stokes/Anti-Stokes Phonon Sidebands for a Ratiometric Thermometer and Thermally Stable NIR LEDs

“…There are plenty of NIR luminescent materials, including organic dyes, quantum dots, and ion-activated phosphors. − Among them, the last one offers an unparalleled advantage in long-term stability. Cr 3+ has emerged as a star activator for its efficient and adjustable NIR emission and its excitation band matching blue LED chips. , With a d 3 electronic configuration, Cr 3+ needs to fit in octahedral crystal fields to achieve NIR emission from the 2 E g / 4 T 2g → 4 A 2g transition. , Therefore, those hosts with substitutable octahedral sites can construct NIR phosphors through doping Cr 3+ , such as LiIn 2 SbO 6 :Cr 3+ , MgSi 2 O 6 :Cr 3+ , and LiGa 5 O 8 :Cr 3+ . − Although many Cr 3+ -doped phosphors have been realized, the luminescent properties of Cr 3+ are not entirely satisfying.…”