Browsing by Author "Žídek, Karel"
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Drastic difference between hole and electron injection through the gradient shell of Cd: XSeyZn1- xS1- y quantum dots
Abdellah, Mohamed; Poulsen, Felipe; Zhu, Qiushi; Zhu, Nan; Žídek, Karel; Chábera, Pavel; Corti, Annamaria; Hansen, Thorsten; Chi, Qijin; Canton, Sophie E.; Zheng, Kaibo; Pullerits, Tõnu... more authors ... less authors ( Royal Society of Chemistry , 2017 , Article)Ultrafast fluorescence spectroscopy was used to investigate the hole injection in CdxSeyZn1−xS1−y gradient core–shell quantum dot (CSQD) sensitized p-type NiO photocathodes. A series of CSQDs with a wide range of shell ... -
Hot electron and hole dynamics in thiol-capped CdSe quantum dots revealed by 2D electronic spectroscopy
Lenngren, Nils; Abdellah, Mohamed A.; Zheng, Kaibo; Al-Marri, Mohammed J.; Zigmantas, Donatas; Žídek, Karel; Pullerits, Tõnu... more authors ... less authors ( Royal Society of Chemistry , 2016 , Article)Colloidal quantum dots (QDs) have attracted interest as materials for opto-electronic applications, wherein their efficient energy use requires the understanding of carrier relaxation. In QDs capped by bifunctional thiols, ... -
Trap States and Their Dynamics in Organometal Halide Perovskite Nanoparticles and Bulk Crystals
Zheng, Kaibo; Žídek, Karel; Abdellah, Mohamed; Messing, Maria E.; Al-Marri, Mohammed J.; Pullerits, Tõnu... more authors ... less authors ( American Chemical Society , 2016 , Article)Organometal halide perovskites have attracted tremendous attention for optoelectronic applications. Charge carrier trapping is one of the dominant processes often deteriorating the performance of devices. Here, we investigate ...