Welding of Semiconductor Nanowires by Coupling Laser-Induced Peening and Localized Heating.

ABSTRACT: We demonstrate that laser peening coupled with sintering of CdTe nanowire films substantially enhances film quality and charge transfer while largely maintaining basic particle morphology. During the laser peening phase, a shockwave is used to compress the film. Laser sintering comprises the second step, where a nanosecond pulse laser beam welds the nanowires. Microstructure, morphology, material content, and electrical conductivities of the films are characterized before and after treatment. The morphology results show that laser peening can decrease porosity and bring nanowires into contact, and pulsed laser heating fuses those contacts. Multiphysics simulations coupling electromagnetic and heat transfer modules demonstrate that during pulsed laser heating, local EM field enhancement is

SUBMITTER: Rickey KM 

PROVIDER: S-EPMC4630610 | biostudies-literature | 2015 Nov

REPOSITORIES: biostudies-literature