W-Doped Cs2SnCl6 for Near-Infrared Emission DOI

Barnali Mondal,

Sakshi Mehta, Abhishake Mondal

et al.

The Journal of Physical Chemistry Letters, Journal Year: 2025, Volume and Issue: unknown, P. 4937 - 4943

Published: May 10, 2025

0D perovskite derivatives such as Cs2WCl6 and Cs2WOxCl6-x have been recently shown to emit near-infrared (NIR) radiation. The d-d electronic transition of W4+/W5+ yields an NIR emission. However, the close proximity those ions can quench photoluminescence via concentration quenching. To address this issue, here we dilute emission centers by doping a small amount W into Cs2SnCl6 perovskite. results suggest that dopant are [WOCl5]2- replacing [SnCl6]2- octahedra in host lattice. optimal 3.3% W-doped exhibits (965 nm) with over 52 times higher intensity compared Cs2WOxCl6-x. suppression quenching also significantly alters its temperature-dependent (7-300 K) Finally, demonstrated phosphor-converted light-emitting diodes showing output power 10.3 mW at 400 mA. This is first report perovskites potential phosphor.

Language: Английский

W-Doped Cs2SnCl6 for Near-Infrared Emission DOI

Barnali Mondal,

Sakshi Mehta, Abhishake Mondal

et al.

The Journal of Physical Chemistry Letters, Journal Year: 2025, Volume and Issue: unknown, P. 4937 - 4943

Published: May 10, 2025

0D perovskite derivatives such as Cs2WCl6 and Cs2WOxCl6-x have been recently shown to emit near-infrared (NIR) radiation. The d-d electronic transition of W4+/W5+ yields an NIR emission. However, the close proximity those ions can quench photoluminescence via concentration quenching. To address this issue, here we dilute emission centers by doping a small amount W into Cs2SnCl6 perovskite. results suggest that dopant are [WOCl5]2- replacing [SnCl6]2- octahedra in host lattice. optimal 3.3% W-doped exhibits (965 nm) with over 52 times higher intensity compared Cs2WOxCl6-x. suppression quenching also significantly alters its temperature-dependent (7-300 K) Finally, demonstrated phosphor-converted light-emitting diodes showing output power 10.3 mW at 400 mA. This is first report perovskites potential phosphor.

Language: Английский

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