Addendum: Slow carrier relaxation in tin-based perovskite nanocrystals
نویسندگان
چکیده
منابع مشابه
Strong Carrier–Phonon Coupling in Lead Halide Perovskite Nanocrystals
We highlight the importance of carrier-phonon coupling in inorganic lead halide perovskite nanocrystals. The low-temperature photoluminescence (PL) spectrum of CsPbBr3 has been investigated under a nonresonant and a nonstandard, quasi-resonant excitation scheme, and phonon replicas of the main PL band have been identified as due to the Fröhlich interaction. The energy of longitudinal optical (L...
متن کاملExciton Relaxation Dynamics in Photo-Excited CsPbI3 Perovskite Nanocrystals
The exciton relaxation process of CsPbI3 perovskite nanocrystals (NCs) has been investigated by using transient absorption (TA) spectroscopy. The hot exciton relaxation process is confirmed to exist in the CsPbI3 NCs, through comparing the TA data of CsPbI3 NCs in low and high energy excitonic states. In addition, the Auger recombination and intrinsic decay paths also participate in the relaxat...
متن کاملSlow hot-carrier relaxation in colloidal graphene quantum dots.
Reducing hot-carrier relaxation rates is of great significance in overcoming energy loss that fundamentally limits the efficiency of solar energy utilization. Semiconductor quantum dots are expected to have much slower carrier cooling because the spacing between their discrete electronic levels is much larger than phonon energy. However, the slower carrier cooling is difficult to observe due to...
متن کاملCorrigendum: Slow cooling and highly efficient extraction of hot carriers in colloidal perovskite nanocrystals
This corrects the article DOI: 10.1038/ncomms14350.
متن کاملSlow cooling and highly efficient extraction of hot carriers in colloidal perovskite nanocrystals
Hot-carrier solar cells can overcome the Schottky-Queisser limit by harvesting excess energy from hot carriers. Inorganic semiconductor nanocrystals are considered prime candidates. However, hot-carrier harvesting is compromised by competitive relaxation pathways (for example, intraband Auger process and defects) that overwhelm their phonon bottlenecks. Here we show colloidal halide perovskite ...
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ژورنال
عنوان ژورنال: Nature Photonics
سال: 2021
ISSN: ['1749-4885', '1749-4893']
DOI: https://doi.org/10.1038/s41566-021-00900-0