1 research outputs found
Boosting the efficiency of transient photoluminescence microscopy using cylindrical lenses
Transient Photoluminescence Microscopy (TPLM) allows for the direct visualization of carrier transport in
semiconductor materials with sub nanosecond and few nanometer resolution. The technique is based on
measuring changes in the spatial distribution of a diffraction limited population of carriers using spatiotemporal detection of the radiative decay of the carriers. The spatial resolution of TPLM is therefore primarily determined by the signal-to-noise-ratio (SNR). Here we present a method using cylindrical lenses
to boost the signal acquisition in TPLM experiments. The resulting asymmetric magnification of the
photoluminescence emission of the diffraction limited spot can increase the collection efficiency by
more than a factor of 10, significantly reducing acquisition times and further boosting spatial resolutionWe acknowledge the support from the “(MAD2D-CM)-UAM”
project funded by Comunidad de Madrid, by the Recovery,
Transformation and Resilience Plan, and by NextGenerationEU
from the European Union, as well as from the Spanish
Ministry of Science and Innovation under grant agreement
TED2021-131018B-C21 and through the RamĂłn y Cajal
program (F.P. RYC-2017-23253