376 citations · 959 across the 19 of their papers we have counts for
4 papers · 1 filter
Reducing the efficiency droop by lateral carrier confinement in InGaN/GaN quantum-well nanorods
Chentian Shi, Chunfeng Zhang, Fan Yang +6
Efficiency droop is a major obstacle facing high-power application of InGaN/GaN quantum-well (QW) light-emitting diodes. In this letter, we report the suppression of efficiency dro…
Enhanced Hot-Carrier Luminescence in Multilayer Reduced Graphene Oxide Nanospheres
Qi Chen, Chunfeng Zhang, Fei Xue +7
We report a method to promote photoluminescence emission in graphene materials by enhancing carrier scattering instead of directly modifying band structure in multilayer reduced gr…
Orbital-Selective Mottness in KxFe2-ySe2 Superconductors Revealed by Pump-Probe Spectroscopy
Wei Li, Chunfeng Zhang, Shenghua Liu +5
We report transient optical signatures of the orbital-selective Mottness in superconducting KxFe2-ySe2 crystals by using dual-color pump-probe spectroscopy. Besides multi-exponenti…
Defect recombination induced by density-activated carrier diffusion in nonpolar InGaN quantum wells
Fan Yang, Chunfeng Zhang, Chentian Shi +7
We report on the observation of carrier-diffusion-induced defect emission at high excitation density in a-plane InGaN single quantum wells. When increasing excitation density in a…