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Lewis Acid Induced Functionalization of Photoluminescent 2D Silicon Nanosheets for the Fabrication of Functional Hybrid Films
Author(s) -
Helbich Tobias,
Lyuleeva Alina,
Marx Philipp,
Scherf Lavinia M.,
Purkait Tapas K.,
Fässler Thomas F.,
Lugli Paolo,
Veinot Jonathan G. C.,
Rieger Bernhard
Publication year - 2017
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201606764
Subject(s) - materials science , hydrosilylation , surface modification , silicon , hydride , nanotechnology , polymer , photoluminescence , fabrication , field effect transistor , chemical engineering , transistor , optoelectronics , organic chemistry , catalysis , medicine , alternative medicine , pathology , engineering , metal , chemistry , physics , voltage , quantum mechanics , metallurgy , composite material
Various Lewis acids are found to efficiently catalyze hydrosilylation reactions of hydride‐terminated 2D silicon nanosheets at room temperature. The hydride‐terminated nanosheets can be functionalized with a variety of unsaturated functional substrates and still possess their unique characteristic (opto)electronic properties (e.g., photoluminescence). This is demonstrated by successfully implementing the readily functionalized materials into new silicon/semiconducting polymer‐based field‐effect transistors (FETs). Surface modification of the freestanding silicon nanosheets opens new possibilities to form highly homogeneous blends with the already broadly used conventional polymers poly(3‐hexylthiophene‐2,5‐diyl). The consequential combination of the different properties of the materials enables the enhancement of the sensitivity of the solution‐gated FETs and increases the transconductance of the operating device.