Quantum-Chemical Modeling of Two Er3N@C80 Isomers
ECS Journal of Solid State Science and Technology The Electrochemical Society 12:9 (2023) 091004
High-bandwidth perovskite photonic sources on silicon
Nature Photonics Springer Nature 17:9 (2023) 798-805
Impact of Interface Energetic Alignment and Mobile Ions on Charge Carrier Accumulation and Extraction in p‐i‐n Perovskite Solar Cells
Advanced Energy Materials Wiley 13:36 (2023)
Self-assembled monolayer-based blue perovskite LEDs.
Science advances 9:36 (2023) eadh2140
Abstract:
Blue perovskite light-emitting diodes (LEDs) have shown external quantum efficiencies (EQEs) of more than 10%; however, devices that emit in the true blue-those that accord with the emission wavelength required for Rec. 2100 primary blue-have so far been limited to EQEs of ~6%. We focused here on true blue emitting CsPbBr3 colloidal nanocrystals (c-NCs), finding in early studies that they suffer from a high charge injection barrier, a problem exacerbated in films containing multiple layers of nanocrystals. We introduce a self-assembled monolayer (SAM) active layer that improves charge injection. We identified a bifunctional capping ligand that simultaneously enables the self-assembly of CsPbBr3 c-NCs while passivating surface traps. We report, as a result, SAM-based LEDs exhibit a champion EQE of ~12% [CIE of (0.132, 0.069) at 4.0 V with a luminance of 11 cd/m2], and 10-fold-enhanced operating stability relative to the best previously reported Rec. 2100-blue perovskite LEDs.Design considerations for the bottom cell in perovskite/silicon tandems: a terawatt scalability perspective
Energy & Environmental Science Royal Society of Chemistry 16:10 (2023) 4164-4190