Dresden 2017 – wissenschaftliches Programm
CPP 13.7: Poster
Montag, 20. März 2017, 18:30–21:00, P1A
Polarisation resolved optical spectroscopy of single CsPbI3 nanocrystals — •Mirko Goldmann1,2, Daniela Täuber1,5, Juanzi Shi1, Junsheng Chen3, Maria E. Messing4,5, Kaibo Zheng3, and Ivan G. Scheblykin1,5 — 1Single molecule spectroscopy group, Lund University, Sweden — 2TU Ilmenau, Germany — 32D spectroscopy group, Lund University, Sweden — 4Solid State Physics, Lund University, Sweden — 5NanoLund, Lund University, Sweden
Semiconducting metal halide nanocrystals are promising candidates for optoelectronic devices due to their high quantum yield and solution processability. Fully inorganic CsPbI3 is more stable than CH3NH3PbI3. Polarization resolved optical spectroscopy of single CsPbI3 nanocrystals probes their cubic crystal structure and sperical shapes. Photoluminescence emission from freshly synthesized CsPbI3 nanocrystals was found to be almost unpolarized. Several weeks old nanocrystals showed an increased appearance of polarized photoluminescence in agreement with the observation of elongated crystal shapes by TEM.