ACS Applied Materials & Interfaces
ACS Applied Materials & Interfaces
5 years ago

Light-Converting Polymer/Si Nanocrystal Composites with Stable 60–70% Quantum Efficiency and Their Glass Laminates

Light-Converting Polymer/Si Nanocrystal Composites with Stable 60–70% Quantum Efficiency and Their Glass Laminates
Jonathan G. C. Veinot, Wouter van der Wijngaart, Sergei Popov, Tommy Haraldsson, Aleksandrs Marinins, Ilya Sychugov, Jan Linnros, Reza Zandi Shafagh
Thiol–ene polymer/Si nanocrystal bulk hybrids were synthesized from alkyl-passivated Si nanocrystal (Si NC) toluene solutions. Radicals in the polymer provided a copassivation of “dark” Si NCs, making them optically active and leading to a substantial ensemble quantum yield increase. Optical stability over several months was confirmed. The presented materials exhibit the highest photoluminescence quantum yield (∼65%) of any solid-state Si NC hybrid reported to date. The broad tunability of thiol–ene polymer reactivity provides facile glass integration, as demonstrated by a laminated structure. This, together with extremely fast polymerization, makes the demonstrated hybrid material a promising candidate for light converting applications.

Publisher URL: http://dx.doi.org/10.1021/acsami.7b09265

DOI: 10.1021/acsami.7b09265

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