Sökning: "Qi Shi"

Hittade 2 avhandlingar innehållade orden Qi Shi.

1. 1. Phase Modulation Two-Photon Microscopy of Hybrid Halide Perovskite

   Författare :Qi Shi; NanoLund: Centre for Nanoscience; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Phase modulation; two-photon microscopy; perovskite; trap; carrier recombination;

   Sammanfattning : Recently, intense research activities have been focused on solution-processed hybrid lead halide perovskite semiconductors which are being developed for the solar-cell, light emitting diode (LED), and lasing applications. To optimize and fabricate a competitive perovskite-based optoelectronic device, the fundamental studies of the electronic structure, photo-generated carrier dynamics as well as the photoluminescence (PL) & photocurrent (PC) response are necessary and of great significance. LÄS MER

3. 2. Comparative studies of modern methods for caries detection and quantification

   Författare :Xie-Qi Shi; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :;

   Sammanfattning : In clinical dentistry proper treatment of caries lesions is highly dependent on diagnostic accuracy. Aim: The present dissertation aimed at the evaluation and comparisons between several modem methods for caries detection and quantification. LÄS MER