TY - JOUR
T1 - Coloring Tetrahedral Semiconductors: Synthesis and Photoluminescence Enhancement of Ternary II-III2‑VI4 Colloidal Nanocrystals
AU - Pavel, Md Riad Sarkar
AU - Chen, Yunhua
AU - Santhiran, Anuluxan
AU - Gi, Eunbyeol
AU - Ochoa-Romero, Kerly
AU - Miller, Gordon J.
AU - Guirado, Gonzalo
AU - Rossini, Aaron J.
AU - Vela, Javier
N1 - Publisher Copyright:
© 2024 The Authors. Published by American Chemical Society.
PY - 2024/9/20
Y1 - 2024/9/20
N2 - Ternary tetrahedral II-III
2-VI
4 semiconductors, where II is Zn or Cd, III In or Ga, and VI S, Se, or Te, are of interest in UV radiation detectors in medicine and space physics as well as CO
2 photoreduction under visible light. We synthesize colloidal II-III
2-VI
4 semiconductor nanocrystals from readily available precursors and ascertain their ternary nature by structural and spectroscopic methods, including
77Se solid-state NMR spectroscopy. The pyramidally shaped nanocrystals range between 2 and 12 nm and exhibit optical gaps of 2-3.9 eV. In the presence of excess anions on the particle surface, treatment with Lewis acidic, Z-type ligands results in better passivation and enhanced photoluminescence. Electronic structure calculations reveal the most stable, lowest energy polymorphs and coloring patterns. This work will pave the way toward more environmentally friendly, ternary semiconductors for optoelectronics and electrocatalysis.
AB - Ternary tetrahedral II-III
2-VI
4 semiconductors, where II is Zn or Cd, III In or Ga, and VI S, Se, or Te, are of interest in UV radiation detectors in medicine and space physics as well as CO
2 photoreduction under visible light. We synthesize colloidal II-III
2-VI
4 semiconductor nanocrystals from readily available precursors and ascertain their ternary nature by structural and spectroscopic methods, including
77Se solid-state NMR spectroscopy. The pyramidally shaped nanocrystals range between 2 and 12 nm and exhibit optical gaps of 2-3.9 eV. In the presence of excess anions on the particle surface, treatment with Lewis acidic, Z-type ligands results in better passivation and enhanced photoluminescence. Electronic structure calculations reveal the most stable, lowest energy polymorphs and coloring patterns. This work will pave the way toward more environmentally friendly, ternary semiconductors for optoelectronics and electrocatalysis.
KW - Crystals
KW - Electrical conductivity
KW - Nanocrystals
KW - Nuclear magnetic resonance spectroscopy
KW - Semiconductors
KW - Nmr
KW - Solid-state
UR - http://www.scopus.com/inward/record.url?scp=85204561644&partnerID=8YFLogxK
U2 - 10.1021/acsenergylett.4c02032
DO - 10.1021/acsenergylett.4c02032
M3 - Article
C2 - 39416674
SN - 2380-8195
VL - 9
SP - 5012
EP - 5018
JO - ACS Energy Letters
JF - ACS Energy Letters
IS - 10
ER -
