2011/08/03 by K. Kukliński, Krzysztof Kukliński, Ł. Kłopotowski +19 · 11 citations
Engineering · Materials Science · Physics and Astronomy · #Advanced Semiconductor Detectors and Materials #Cadmium telluride photovoltaics #Cascade #Excited state #Layer (electronics) #Photoluminescence #Quantum Dots Synthesis And Properties #Quantum dot #Quantum dot laser #Semiconductor Quantum Structures and Devices #cond-mat.mes-hall
paper · pdf · doi:10.1063/1.3643476
published in Applied Physics Letters 99(14) (American Institute of Physics) · submitted to Applied Physics Letters
arxiv created 2011/08/03 · openalex publication_date 2011/10/03 · arxiv updated 2011/11/17 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We present photoluminescence studies of highly excited single self-assembled CdTe quantum dots under continuous-wave and pulsed excitations. We observe appearance of emission bands related to sequential filling of s-, p- and d-shells. We analyze the inter-shell splitting for five samples, in which the dots were formed from a strained CdTe layer of different width. We find that by increasing the CdTe layer width, the inter-shell splitting increases. In a time resolved measurement, we observe a radiative cascade between transitions involving one, two, and more than two excitons.