Radiative Monomolecular Recombination Boosts Amplified Spontaneous Emission in HC(NH2)2SnI3 Perovskite Films | Zendy

Rebecca L. Milot | Zendy; Giles E. Eperon | Zendy; Thomas Green | Zendy; Henry J. Snaith | Zendy; Michael B. Johnston | Zendy; Laura M. Herz | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

Radiative Monomolecular Recombination Boosts Amplified Spontaneous Emission in HC(NH₂)₂SnI₃ Perovskite Films

Author(s) -

Rebecca L. Milot,

Giles E. Eperon,

Thomas Green,

Henry J. Snaith,

Michael B. Johnston,

Laura M. Herz

Publication year - 2016

Publication title -

the journal of physical chemistry letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.563

H-Index - 203

ISSN - 1948-7185

DOI - 10.1021/acs.jpclett.6b02030

Subject(s) - formamidinium , triiodide , perovskite (structure) , halide , spontaneous emission , charge carrier , tin , auger effect , materials science , radiative transfer , electroluminescence , doping , optoelectronics , non radiative recombination , chemistry , auger , atomic physics , laser , nanotechnology , inorganic chemistry , semiconductor , optics , crystallography , physics , electrode , electrolyte , metallurgy , semiconductor materials , dye sensitized solar cell , layer (electronics)

Hybrid metal-halide perovskites have potential as cost-effective gain media for laser technology because of their superior optoelectronic properties. Although lead-halide perovskites have been most widely studied to date, tin-based perovskites have been proposed as a less toxic alternative. In this Letter, we show that amplified spontaneous emission (ASE) in formamidinium tin triiodide (FASnI 3 ) thin films is supported by an observed radiative monomolecular charge recombination pathway deriving from its unintentional doping. Such a radiative component will be active even at the lowest charge-carrier densities, opening a pathway for ultralow light-emission thresholds. Using time-resolved THz photoconductivity analysis, we further show that the material has an unprecedentedly high charge-carrier mobility of 22 cm 2 V -1 s -1 favoring efficient transport. In addition, FASnI 3 exhibits strong radiative bimolecular recombination and Auger rates that are over an order of magnitude lower than for lead-halide perovskites. In combination, these properties reveal that tin-halide perovskites are highly suited to light-emitting devices.

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research