Rapid crystallization driven highly efficient phase-pure deep blue Ruddlesden-Popper perovskite light-emitting diodes

Gyumin Jang; Sunihl Ma; Junwoo Lee; Chan Uk Lee; Wooyong Jeong; Jaehyun Son; Jooho Moon

doi:10.1117/12.2633289

26 September 2022 Rapid crystallization driven highly efficient phase-pure deep blue Ruddlesden-Popper perovskite light-emitting diodes

Gyumin Jang, Sunihl Ma, Junwoo Lee, Chan Uk Lee, Wooyong Jeong, Jaehyun Son, Jooho Moon

Author Affiliations +

Proceedings Volume PC12208, Organic and Hybrid Light Emitting Materials and Devices XXVI; PC122081A (2022) https://doi.org/10.1117/12.2633289
Event: SPIE Organic Photonics + Electronics, 2022, San Diego, California, United States

Conference Poster

Abstract

Perovskite light-emitting diodes (PeLEDs) are considered as a promising candidate for next-generation solution-processed full-color displays. However, the external quantum efficiency as well as the operational stability of deep-blue (< 460 nm) PeLEDs still lag far behind compared to their red and green counterparts. Herein, the rapid crystallization method based on antisolvent bathing is proposed for trealization deep-blue PeLEDs. By promoting the immediate removal of precursor solvents from the wet perovskite films, the development of the quasi-2D Ruddlesden‒Popper perovskite (2D-RPP) crystals with n value of < 3 was completely hampered, so that phase-pure 2D-RPP films whose bandgap is suitable for deep-blue PeLEDs were successfully obtained.

Citation Download Citation

Gyumin Jang, Sunihl Ma, Junwoo Lee, Chan Uk Lee, Wooyong Jeong, Jaehyun Son, and Jooho Moon "Rapid crystallization driven highly efficient phase-pure deep blue Ruddlesden-Popper perovskite light-emitting diodes", Proc. SPIE PC12208, Organic and Hybrid Light Emitting Materials and Devices XXVI, PC122081A (26 September 2022); https://doi.org/10.1117/12.2633289

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