6533b835fe1ef96bd129ed0a

RESEARCH PRODUCT

Continuous-Flow Synthesis of Orange Emitting Sn(II)-Doped CsBr Materials

Samrat Das AdhikariSofia MasiCarlos Echeverría-arrondoSara Miralles-cominsRafael SánchezJesum Alves FernandesVladimir ChirvonyJuan P. Martínez-pastorVictor SansIván Mora-seró

subject

PhotoluminescenceRecrystallization (geology)Materials scienceAnalytical chemistrychemistry.chemical_elementHalideQuantum yield02 engineering and technology010402 general chemistry7. Clean energy01 natural sciencescontinuous flow reactor synthesis CsBr interstitial doping long-term ambient stability photoluminescence quantum yield self-trapped excitonic emissionMetalphotoluminescence quantum yieldlong-term ambient stabilityself-trapped excitonic emissionPerovskite (structure)Dopingcontinuous flow reactor synthesis021001 nanoscience & nanotechnologyAtomic and Molecular Physics and Optics0104 chemical sciencesElectronic Optical and Magnetic Materialschemistryvisual_artCaesiumvisual_art.visual_art_mediumCsBrinterstitial doping0210 nano-technology

description

An ongoing demand toward lead-free all-inorganic cesium metal halide perovskites has presented Sn(II) as an ideal substitute of Pb(II) for applications in optoelectronic devices. The major concern regarding Sn(II) is the instability due to the ambient oxidation to Sn(IV). To expand the scope of traditional perovskite and analogues, herein the synthesis and optical performance of Sn(II)-doped CsBr, a new material formed by interstitial doping of Sn(II) into the CsBr matrix, are reported for the first time. This material is prepared following an antisolvent mediated recrystallization method using a continuous flow reactor, which is beneficial for scaling up the production compared to traditional batch reactors. Sn(II)-doped CsBr exhibits broadband orange emission with full-width-half-maximum of 180 nm and a photoluminescence quantum yield of 21.5%. The emission turned to be highly stable over 7 months despite containing Sn(II). It is suggested that this is due to interstitial location of Sn(II) atoms in bulk of microcrystals. A broadband emission and high aerobic stability are attractive properties of the material for white-light emitting applications. Funding for open access charge: CRUE-Universitat Jaume I

yearjournalcountryeditionlanguage
2021-09-05
10.1002/adom.202101024http://hdl.handle.net/10234/194676