53 citations · 234 across the 16 of their papers we have counts for
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Probing Excitons in Ultrathin PbS Nanoplatelets with Enhanced Near-Infrared Emission
Francisco Manteiga Vázquez, Qianli Yu, Lars F. Klepzig +3
Strongly quantum-confined 2D colloidal PbS nanoplatelets (NPLs) are highly interesting materials for near-infrared optoelectronic applications. Here, we use ultrafast transient opt…
Emergence of New Materials for Exploiting Highly Efficient Carrier Multiplication in Photovoltaics
Sourav Maiti, Marco van der Laan, Deepika Poonia +3
In conventional solar cell semiconductor materials (predominantly Si) photons with energy higher than the band gap initially generate hot electrons and holes, which subsequently co…
Observation of the quantized motion of excitons in CdSe nanoplatelets
Michele Failla, Francisco García Flórez, Bastiaan B. V. Salzmann +3
We show that the finite lateral sizes of ultrathin CdSe nanoplatelets strongly affect both their photoluminescence and optical absorption spectra. This is in contrast to the situat…
Change in Tetracene Polymorphism Facilitates Triplet Transfer in Singlet Fission-Sensitized Silicon Solar Cells
Benjamin Daiber, Sourav Maiti, Silvia Ferro +8
Singlet fission in tetracene generates two triplet excitons per absorbed photon. If these triplet excitons can be effectively transferred into silicon (Si) then additional photocur…
Biexcitons in Highly Excited CdSe Nanoplatelets
F. García Flórez, Laurens D. A. Siebbeles, H. T. C. Stoof
We present the phase diagram of free charges (electrons and holes), excitons, and biexcitons in highly excited CdSe nanoplatelets that predicts a crossover to a biexciton-dominated…
Effects of Two-Dimensional Material Thickness and Surrounding Dielectric Medium on Coulomb Interactions and Excitons
F. García Flórez, Laurens D. A. Siebbeles, H. T. C. Stoof
We examine the impact of quantum confinement on the interaction potential between two charges in two-dimensional semiconductor nanosheets in solution. The resulting effective poten…