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المؤلفZhu, Qiushi
المؤلفZheng, Kaibo
المؤلفAbdellah, Mohamed
المؤلفGeneralov, Alexander
المؤلفHaase, D�rthe
المؤلفCarlson, Stefan
المؤلفNiu, Yuran
المؤلفHeimdal, Jimmy
المؤلفEngdahl, Anders
المؤلفMessing, Maria E.
المؤلفPullerits, Tonu
المؤلفCanton, Sophie E.
تاريخ الإتاحة2021-09-08T06:49:45Z
تاريخ النشر2016
اسم المنشورPhysical Chemistry Chemical Physics
المصدرScopus
الرقم المعياري الدولي للكتاب14639076
معرّف المصادر الموحدhttp://dx.doi.org/10.1039/c6cp01843b
معرّف المصادر الموحدhttp://hdl.handle.net/10576/22916
الملخصAfter having emerged as primary contenders in the race for highly efficient optoelectronics materials, organolead halide perovskites (OHLP) are now being investigated in the nanoscale regime as promising building blocks with unique properties. For example, unlike their bulk counterpart, quantum dots of OHLP are brightly luminescent, owing to large exciton binding energies that cannot be rationalized solely on the basis of quantum confinement. Here, we establish the direct correlation between the structure and the electronic band-edge properties of CH3NH3PbBr3 nanoparticles. Complementary structural and spectroscopic measurements probing long-range and local order reveal that lattice strain influences the nature of the valence band and modifies the subtle stereochemical activity of the Pb2+ lone-pair. More generally, this work demonstrates that the stereochemical activity of the lone-pair at the metal site is a specific physicochemical parameter coupled to composition, size and strain, which can be employed to engineer novel functionalities in OHLP nanomaterials. 2016 the Owner Societies.
راعي المشروعThe study was financially supported by the Knut and Alice Wallenberg Foundation and the Swedish Research Council. Collaboration within the NanoLund consortium is acknowledged. Q. Z. and K. Z. acknowledge support from by NPRP grant # NPRP7-227-1-034 from the Qatar National Research Fund (a member of Qatar Foundation). S. E. C. acknowledges funding from SFB 1073. The help from Dr Trudy Bolin at the 9-BM beamline of APS, USA is also greatfully acknowledged.
اللغةen
الناشرRoyal Society of Chemistry
الموضوعPerovskite Solar Cells
Lead Bromide
Formamidine
العنوانCorrelating structure and electronic band-edge properties in organolead halide perovskites nanoparticles
النوعArticle
الصفحات14933-14940
رقم العدد22
رقم المجلد18
dc.accessType Abstract Only


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