TY - JOUR
T1 - Ultra-Efficient Optical Gain and Lasing in MDACl2-Doped Perovskite Thin Films
AU - Zhang, Shanshan
AU - Gutierrez Arzaluz, Luis
AU - Yin, Jun
AU - Wehbe, Nimer
AU - Naphade, Rounak
AU - Maity, Partha
AU - Bakr, Osman
AU - Malko, Anton V.
AU - Mohammed, Omar F.
N1 - KAUST Repository Item: Exported on 2022-10-31
Acknowledgements: The authors thank King Abdullah University of Science and Technology (KAUST) for financial support and the Supercomputing Laboratory at KAUST for computational and storage resources.
PY - 2022/10/25
Y1 - 2022/10/25
N2 - Solution-processed perovskite materials have been enticing candidates for optical gain and lasing media because of their low cost, remarkable color purity, facile bandgap tunability, and high absorption cross-section. However, it is difficult, if not impossible, for them to highly amplify light with stable operations because they experience severe non-radiative emission losses due to their high density of surface and bulk defect centers and irregular composition. Here, we report that incorporating 5% of methylenediammonium dichloride (MDACl2) into mixed perovskite systems leads to a drastic reduction in the density of iodide interstitials and surface recombination losses. Subsequently, we record that MDA-treated, cavity-free thin perovskite films exhibit very photostable and ultra-low threshold amplified spontaneous emission of
AB - Solution-processed perovskite materials have been enticing candidates for optical gain and lasing media because of their low cost, remarkable color purity, facile bandgap tunability, and high absorption cross-section. However, it is difficult, if not impossible, for them to highly amplify light with stable operations because they experience severe non-radiative emission losses due to their high density of surface and bulk defect centers and irregular composition. Here, we report that incorporating 5% of methylenediammonium dichloride (MDACl2) into mixed perovskite systems leads to a drastic reduction in the density of iodide interstitials and surface recombination losses. Subsequently, we record that MDA-treated, cavity-free thin perovskite films exhibit very photostable and ultra-low threshold amplified spontaneous emission of
UR - http://hdl.handle.net/10754/685221
UR - https://pubs.acs.org/doi/10.1021/acs.chemmater.2c02857
U2 - 10.1021/acs.chemmater.2c02857
DO - 10.1021/acs.chemmater.2c02857
M3 - Article
SN - 0897-4756
JO - Chemistry of Materials
JF - Chemistry of Materials
ER -