X-ray diffraction, vibrational and photoluminescence studies of the self-organized quantum well crystal H3N(CH2)6NH3PbBr4

Electronic structure calculations and optical properties of a new organic–inorganic luminescent perovskite: (C9H19NH3)2PbI2Br2

“…According to the studies in Ref. [8,[15][16][17][18][19], the enhancement is due to the unusual alternate organic-inorganic layered structure enabling the exciton state to be very stable even at room temperature.…”

“…The two dimensionality of the layered structure combined with the dielectric confinement effect enables the formation of a stable exciton with a large binding energy of several hundred meV in the inorganic semiconductor layer of PbX 4 [11][12][13][14]. Several attractive optical properties are induced by the exciton presence such as efficient photoluminescence at room temperature [15][16][17][18][19]. As a consequence, their unusual semiconducting properties have been widely studied and used for photoluminescence materials, thin-film field-effect transistors, electroluminescent devices, etc.…”

A New Class of Nanostructured Inorganic–Organic Hybrid Semiconductors Based on II–VI Binary Compounds

“…The interactions between inorganic and organic species in perovskite hybrids are primarily ionic, accompanied also with relatively weak hydrogen-bonds or van der Waals forces in some cases. The layered perovskite hybrid structures provide a good platform for the preparation and investigation of two-dimensional (2D) quantum well systems (89)(90)(91)(92). A number of interesting optical, electrical, and magnetic properties have been discovered in these materials (75,90,(93)(94)(95)(96)(97)(98)(99)(100)(101)(102)(103)(104)(105)(106)(107)(108).…”

Optical properties and ab initio study on the hybrid organic–inorganic material [(CH3)2NH2]3[BiI6]

“…They show a good agreement with experimental data. Analysis of the Raman and IR spectra and the assignment has been performed by comparison with the spectra of homologous organic-inorganic hydrogen bonded compounds [25,26] and by visualization of the calculated vibration modes. The computed vibrational frequencies of [(CH 3 ) 2 NH 2 ] 3 [BiI 6 ] as well as their assignment from DFT and PM3 methods along with experimentally observed Raman and IR frequencies are collected in Table 4.…”