Phosphine-free synthesis of p-type copper(I) selenide nanocrystals in hot coordinating solvents.
We report a phosphine-free synthesis of p-type copper(I) selenide nanocrystals by a colloidal approach in a mixture of oleylamine and 1-octadecene. The nanocrystals had a cuboctahedral shape and cubic berzelianite phase. Films of these nonstoichiometric copper-deficient Cu(2-x)Se nanocrystals were highly conductive and showed high absorption coefficient in the near-infrared region. These nanocrystals could be used as hole-injection layers in optoelectronic devices.
Deka
Sasanka
S
Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy.
Genovese
Alessandro
A
Zhang
Yang
Y
Miszta
Karol
K
Bertoni
Giovanni
G
Krahne
Roman
R
Giannini
Cinzia
C
Manna
Liberato
L