The influence of surface functionalization methods on the performance of silicon nanocrystal LEDs

Arzu Angi, Marius Loch, Regina Sinelnikov, Jonathan G.C. Veinot, Markus Becherer, Paolo Lugli, Bernhard Rieger

Research output: Contribution to journalArticlepeer-review

21 Scopus citations

Abstract

The influence of silicon nanocrystal (SiNC) surface characteristics obtained from different functionalization methods on the performance of LEDs was investigated. The surface of SiNCs was functionalized with hexyl chains via hydrosilylation (HS) or with organolithium reagents (OLR) and resulting SiNCs were incorporated as the emissive layer in hybrid organic/inorganic LEDs. Devices utilizing SiNCs functionalized with OLR consistently exhibited lower turn-on voltages, higher luminances and external quantum efficiencies compared to those obtained from the HS method. These improvements were attributed to the less dense and monolayer surface coverage of the SiNCs obtained by the OLR method, as well as their higher absolute quantum yield.

Original languageEnglish
Pages (from-to)10337-10342
Number of pages6
JournalNanoscale
Volume10
Issue number22
DOIs
StatePublished - 14 Jun 2018

Fingerprint

Dive into the research topics of 'The influence of surface functionalization methods on the performance of silicon nanocrystal LEDs'. Together they form a unique fingerprint.

Cite this