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Infrared conductivity of hole accumulation and depletion layers in (Ga,Mn)As- and (Ga,Be)As-based electric field-effect devices
B. C. Chapler, S. Mack, L. Ju +11
We have fabricated electric double-layer field-effect devices to electrostatically dope our active materials, either =0.015 GaMnAs or =3.2 Ga$_{1-x…
Infrared signatures of high carrier densities induced in semiconducting poly(3-hexylthiophene) by fluorinated organosilane molecules
Omar Khatib, Bumsu Lee, Jonathan D. Yuen +5
We report on infrared (IR) absorption and dc electrical measurements of thin films of poly(3-hexylthiophene) (P3HT) that have been modified by a fluoroalkyl trichlorosilane (FTS).…
Recombination in polymer-fullerene bulk heterojunction solar cells
Sarah R. Cowan, Anshuman Roy, Alan J. Heeger
Recombination of photogenerated charge carriers in polymer bulk heterojunction (BHJ) solar cells reduces the short circuit current (Jsc) and the fill factor (FF). Identifying the m…
Concentration-dependent mobility in organic field-effect transistors probed by infrared spectromicroscopy of the charge density profile
A. D. Meyertholen, Z. Q. Li, D. N. Basov +6
We show that infrared imaging of the charge density profile in organic field-effect transistors (FETs) can probe transport characteristics which are difficult to access by conventi…