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<p>Perovskite-based light-emitting diodes (PeLEDs) have emerged as promising candidates for next-generation optoelectronic devices due to their exceptional emissive properties, solution processability, and tunable bandgaps. However, challenges such as limited charge injection, non-radiative losses, and poor operational stability hinder their commercial viability. Addressing these limitations, this study investigates the role of plasmonic metal nanoparticles (NPs) in enhancing the photoconductivity and emission efficiency of MAPbI₃-based hybrid PeLEDs. The objective of the research is to evaluate how different metal NPs—Au, Ag, Cu, and Al—affect the performance and durability of perovskite LEDs when introduced through embedded, interface-layered, and hybrid architectures. Using a combination of spin-coating and thermal evaporation methods, LEDs were fabricated with controlled NP integration, and their performance was assessed via photoluminescence (PL), time-resolved PL, J–V, L–V, EQE, and lifetime testing. Results reveal that Au NP hybrid LEDs exhibited a peak EQE of 12% and a fivefold increase in T₅₀ operational lifetime compared to control devices. Ag and Cu showed moderate enhancements, while Al contributed significantly to longevity due to its stable oxide shell. These findings underscore the multifunctional benefits of plasmonic integration, improving both emission intensity and operational reliability. This work provides a scalable strategy for developing efficient and durable perovskite LEDs and highlights the potential for incorporating abundant metals into plasmon-enhanced optoelectronics. Future research should explore tuning NP shapes and plasmonic coupling to optimize device architectures further.</p>

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Plasmon-Induced Photoconductivity in Perovskite–Metal Hybrid LEDs Using MAPbI₃ and Metal Nanoparticle Architectures

  • 期刊论文

  • 发表日期：

    2025年6月28日

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  • Prasanna Moorthy Venugopal,
  • Kamali Samudram Manickam,
  • Ratchagaraja Dhairiyasamy,
  • Arunkumar Munimathan

摘要

Perovskite-based light-emitting diodes (PeLEDs) have emerged as promising candidates for next-generation optoelectronic devices due to their exceptional emissive properties, solution processability, and tunable bandgaps. However, challenges such as limited charge injection, non-radiative losses, and poor operational stability hinder their commercial viability. Addressing these limitations, this study investigates the role of plasmonic metal nanoparticles (NPs) in enhancing the photoconductivity and emission efficiency of MAPbI₃-based hybrid PeLEDs. The objective of the research is to evaluate how different metal NPs—Au, Ag, Cu, and Al—affect the performance and durability of perovskite LEDs when introduced through embedded, interface-layered, and hybrid architectures. Using a combination of spin-coating and thermal evaporation methods, LEDs were fabricated with controlled NP integration, and their performance was assessed via photoluminescence (PL), time-resolved PL, J–V, L–V, EQE, and lifetime testing. Results reveal that Au NP hybrid LEDs exhibited a peak EQE of 12% and a fivefold increase in T₅₀ operational lifetime compared to control devices. Ag and Cu showed moderate enhancements, while Al contributed significantly to longevity due to its stable oxide shell. These findings underscore the multifunctional benefits of plasmonic integration, improving both emission intensity and operational reliability. This work provides a scalable strategy for developing efficient and durable perovskite LEDs and highlights the potential for incorporating abundant metals into plasmon-enhanced optoelectronics. Future research should explore tuning NP shapes and plasmonic coupling to optimize device architectures further.