Near-infrared two-photon excited photoluminescence from Yb3+-doped CsPbClxBr3- x perovskite nanocrystals embedded into amphiphilic silica microspheres

Danila A Tatarinov; Ivan D Skurlov; Anastasiia V Sokolova; Alexander A Shimko; Denis V Danilov; Yuliya A Timkina; Maxim A Rider; Viktor V Zakharov; Sergey A Cherevkov; Natalya K Kuzmenko; Aleksandra V Koroleva; Evgeniy V Zhizhin; Nadezhda A Maslova; Ekaterina Yu Stovpiaga; Dmitry A Kurdyukov; Valery G Golubev; Xiaoyu Zhang; Weitao Zheng; Anton N Tcypkin; Aleksandr P Litvin; Andrey L Rogach

doi:10.1039/d4nr00892h

Near-infrared two-photon excited photoluminescence from Yb³⁺-doped CsPbCl_xBr_{3- x} perovskite nanocrystals embedded into amphiphilic silica microspheres

Nanoscale. 2024 Apr 16. doi: 10.1039/d4nr00892h. Online ahead of print.

Authors

Danila A Tatarinov¹, Ivan D Skurlov¹, Anastasiia V Sokolova², Alexander A Shimko³, Denis V Danilov³, Yuliya A Timkina¹, Maxim A Rider¹, Viktor V Zakharov¹, Sergey A Cherevkov¹, Natalya K Kuzmenko⁴, Aleksandra V Koroleva³, Evgeniy V Zhizhin³, Nadezhda A Maslova³, Ekaterina Yu Stovpiaga¹, Dmitry A Kurdyukov¹, Valery G Golubev¹, Xiaoyu Zhang⁵, Weitao Zheng⁵, Anton N Tcypkin⁶, Aleksandr P Litvin^{1

5

6}, Andrey L Rogach²

Affiliations

¹ PhysNano Department, ITMO University, St Petersburg, 197101, Russia. litvin@jlu.edu.cn.
² Department of Materials Science and Engineering, and Center for Functional Photonics, City University of Hong Kong, Hong Kong SAR, 999077, China.
³ Research Park, Saint Petersburg State University, St Petersburg, 199034, Russia.
⁴ Research Center for Optical Materials Science, ITMO University, Saint Petersburg, 197101, Russia.
⁵ Key Laboratory of Automobile Materials MOE, School of Materials Science & Engineering, and Jilin Provincial International Cooperation Key Laboratory of High-Efficiency Clean Energy Materials, Jilin University, Changchun 130012, China.
⁶ Laboratory of Quantum Processes and Measurements, ITMO University, Saint Petersburg, 197101, Russia.

PMID: 38623897
DOI: 10.1039/d4nr00892h

Abstract

Nonlinear absorption of metal-halide perovskite nanocrystals (NCs) makes them an ideal candidate for applications which require multiphoton-excited photoluminescence. By doping perovskite NCs with lanthanides, their emission can be extended into the near-infrared (NIR) spectral region. We demonstrate how the combination of Yb³⁺ doping and bandgap engineering of cesium lead halide perovskite NCs performed by anion exchange (from Cl^- to Br^-) leads to efficient and tunable emitters that operate under two-photon excitation in the NIR spectral region. By optimizing the anion composition, Yb³⁺-doped CsPbCl_xBr_3-x NCs exhibited high values of two-photon absorption cross-section reaching 2.3 × 10⁵ GM, and displayed dual-band emission located both in the visible (407-493 nm) and NIR (985 nm). With a view of practical applications of bio-visualisation in the NIR spectral range, these NCs were embedded into silica microspheres which were further wrapped with amphiphilic polymer shells to ensure their water-compatibility. The resulting microspheres with embedded NCs could be easily dispersed in both toluene and water, while still exhibiting a dual-band emission in visible and NIR under both one- and two-photon excitation conditions.