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Distributed Feedback Lasers by Thermal Nanoimprint of Perovskites Using Gelatin Gratings.

ABSTRACT: To date, thermal nanoimprint lithography (NIL) for patterning hybrid perovskites has always involved an intricate etching step of a hard stamp material or its master. Here, we demonstrate for the first time the successful nanopatterning of a perovskite film by NIL with a low-cost polymeric stamp. The stamp consists of a dichromated gelatin grating structured by holographic lithography. The one-dimensional grating is imprinted into a perovskite film at 95 °C and 90 MPa for 10 min, resulting in a high quality second-order distributed feedback (DFB) laser. The laser exhibits an excellent performance with a threshold of 81 μJ/cm², a line width of 0.32 nm, and a pronounced linear polarization. This novel approach enables cost-effective fabrication of high-quality DFB lasers compatible with different perovskite compositions and photonic nanostructures for a wide range of applications.

SUBMITTER: Allegro I

PROVIDER: S-EPMC9940720 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature

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Distributed Feedback Lasers by Thermal Nanoimprint of Perovskites Using Gelatin Gratings.

Allegro Isabel I Bonal Víctor V Mamleyev Emil R ER Villalvilla José M JM Quintana José A JA Jin Qihao Q Díaz-García María A MA Lemmer Uli U

ACS applied materials & interfaces 20230131 6

To date, thermal nanoimprint lithography (NIL) for patterning hybrid perovskites has always involved an intricate etching step of a hard stamp material or its master. Here, we demonstrate for the first time the successful nanopatterning of a perovskite film by NIL with a low-cost polymeric stamp. The stamp consists of a dichromated gelatin grating structured by holographic lithography. The one-dimensional grating is imprinted into a perovskite film at 95 °C and 90 MPa for 10 min, resulting in a ...[more]

PMID: 36720173

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