Logo Logo
Help
Contact
Switch Language to German

Georgi, Carsten; Green, Alexander A.; Hersam, Mark C. and Hartschuh, Achim (2010): Probing Exciton Localization in Single-Walled Carbon Nanotubes Using High-Resolution Near-Field Microscopy. In: ACS Nano, Vol. 4, No. 10: pp. 5914-5920 [PDF, 596kB]

Abstract

We observe localization of excitons in semiconducting single-walled carbon nanotubes at room temperature using high-resolution near-field photoluminescence (PL) microscopy. Localization is the result of spatially confined exciton energy minima with depths of more than 15 meV connected to lateral energy gradients exceeding 2 meV/nm as evidenced by energy-resolved PL imaging. Simulations of exciton diffusion in the presence of energy variations support this interpretation predicting strongly enhanced PL at local energy minima.

Actions (login required)

View Item View Item