Solution-Processed Tin-Based Perovskite for Near-Infrared Lasing

Guichuan Xing; Mulmudi Hemant Kumar; Wee Kiang Chong; Xinfeng Liu; Yao Cai; Hong Ding; Mark Asta; Michael Grätzel; Subodh Mhaisalkar; Nripan Mathews; Tze Chien Sum

doi:10.1002/adma.201601418

Solution-Processed Tin-Based Perovskite for Near-Infrared Lasing

Adv Mater. 2016 Oct;28(37):8191-8196. doi: 10.1002/adma.201601418. Epub 2016 Jul 15.

Authors

Guichuan Xing¹, Mulmudi Hemant Kumar^{2

3}, Wee Kiang Chong¹, Xinfeng Liu¹, Yao Cai⁴, Hong Ding⁴, Mark Asta⁴, Michael Grätzel^{2

5

4}, Subodh Mhaisalkar^{2

3}, Nripan Mathews^{6

7}, Tze Chien Sum⁸

Affiliations

¹ Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore.
² Energy Research Institute @NTU (ERI@N), Research Techno Plaza, X-Frontier Block, Level 5, 50 Nanyang Drive, Singapore, 637553, Singapore.
³ School of Materials Science and Engineering, Nanyang Technological University, Nanyang Avenue, Singapore, 639798, Singapore.
⁴ Department of Materials Science and Engineering, University of California, Berkeley, CA, 94720, USA.
⁵ Laboratory of Photonics and Interfaces, Department of Chemistry and Chemical Engineering, Swiss Federal Institute of Technology, Station 6, CH-1015 Lausanne, Switzerland.
⁶ Energy Research Institute @NTU (ERI@N), Research Techno Plaza, X-Frontier Block, Level 5, 50 Nanyang Drive, Singapore, 637553, Singapore. nripan@ntu.edu.sg.
⁷ School of Materials Science and Engineering, Nanyang Technological University, Nanyang Avenue, Singapore, 639798, Singapore. nripan@ntu.edu.sg.
⁸ Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore. tzechien@ntu.edu.sg.

PMID: 27417520
DOI: 10.1002/adma.201601418

Abstract

The family of solution-processed tin-based perovskites is demonstrated as a new and superior near-infrared gain medium. Due to the large electron-hole bimolecular recombination associated with tin and the reduced trap density with SnF₂ treatment, these lead-free "green" perovskites yield stable coherent light emission extending to ≈1 μm at strikingly low thresholds.

Keywords: bimolecular recombination; light-emitting diodes; near-infrared lasing; perovskites; trap-states engineering; ultrafast spectroscopy.