Shell-free CuInS₂ Nanocrystals with Near-Unity Photoluminescence for Deep-Red LEDs 

Dr Panagiotis Dallas (Senior Researcher, Grade B’) of the TPCI/NHRF is among the corresponding authors of the original research paper “Shell-free CuInS₂ Nanocrystals with Near-Unity Photoluminescence for Deep-Red LEDs“, S. Orfanoudakis, P. Dallas*, N. Zacharopoulos, P. Tsipas, A. Banis, L. Tsetseris, A.G. Kontos and T. Stergiopoulos* in the journal of the American Chemical Society ACS Appl. Opt. Mater. 2026, 4, 140−147.

This work is led by Dr. Thomas Stergiopoulos of the Institute of Nanoscience and Nanotechnology, NCSR “Demokritos”. The research describes the synthesis and characterization of photoluminescent chalcogenide nanoparticles (CuInS2) that, after appropriate surface modification, achieve a quantum yield of 94 % and fluorescence lifetime of 7.2 μS. The CuInS2 quantum dots were applied at proof-of-concept red light emitting diodes (LED).