Realizing Highly Stable Quasi-2D Blue Perovskite Light-Emitting Diodes Using Energy Cascades Generated by Biomolecule-Derived Plasmonic Nanostructures

Loganathan Veeramuthu; Fang-Rong Liang; Chiung-Han Chen; Fang-Cheng Liang; Yin-Ti Lai; Zhen-Li Yan; Archana Pandiyan; Chun-Tse Tsai; Wei-Cheng Chen; Jin-Cheng Lin; Mei-Hsin Chen; Chu-Chen Chueh; Chi-Ching Kuo

doi:10.1021/acsami.4c11447

Realizing Highly Stable Quasi-2D Blue Perovskite Light-Emitting Diodes Using Energy Cascades Generated by Biomolecule-Derived Plasmonic Nanostructures

ACS Appl Mater Interfaces. 2024 Dec 17. doi: 10.1021/acsami.4c11447. Online ahead of print.

Authors

Affiliations

¹ Institute of Organic and Polymeric Materials, Research and Development Center of Smart Textile Technology, National Taipei University of Technology, Taipei 10608, Taiwan.
² Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan.
³ Department of Materials Science and Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore 117575, Singapore.
⁴ Institute of Polymer Science and Engineering, National Taiwan University, Taipei 10617, Taiwan.
⁵ Department of Electro-Optical Engineering, National Taipei University of Technology, Taipei 106, Taiwan.
⁶ Advanced Research Center for Green Materials Science and Technology, National Taiwan University, Taipei 10617, Taiwan.

PMID: 39690438
DOI: 10.1021/acsami.4c11447

Abstract

Blue perovskite light-emitting diodes (LEDs) lag behind green and red LEDs, which have made considerable strides in efficiency and stability. The main disadvantage is its unmodulated phase domains and low energy transfer efficiency, which impede the efficiency, optical purity, and operational stability of the devices. Herein, we show that using biomolecule-derived plasmonic nanostructures can significantly promote defect passivation, van der Waals gap reduction, and cascade energy transfer through synergistic small-molecule interactions and localized surface plasmonic contributions, thereby improving the electroluminescence (EL) properties and operational stability. The designed blue quasi-2D perovskite LED benefits from the synergistic effect with a higher external quantum efficiency (EQE = 3.51%), EL spectral stability, and superior long-term operational stability. These results validate the optimization of structural and energy cascades of quasi-2D perovskites through a simple and environmentally friendly biomolecular tailorable plasmonic nanostructure approach, paving the way for the development of sustainable electronics.

Keywords: blue emission; light-emitting diodes; localized surface plasmon resonance; photoluminescence; quasi-2D perovskites; silver nanoparticles; stability.