Light Management in 2D Perovskite Toward High-Performance Optoelectronic Applications
Corresponding Author: Guojia Fang
Nano-Micro Letters,
Vol. 17 (2025), Article Number: 131
Abstract
Two-dimensional Dion-Jacobson (DJ) perovskite has garnered significant attention due to its superior responsivity and operation stability. However, efforts are predominantly focused on discovering new organic spacer to synthesize novel perovskites, while material-form-associated light management, which is crucial for enhancing the photodetector’s efficiency, is largely overlooked. Herein, we introduced surface light management strategy into DJ-type perovskite system by synthesizing surface-patterned BDAPbBr4 (BPB, BDA = NH3(CH2)4NH3) microplates (MPs) using template-assisted space-confined method, which was further elucidated by theoretical optical simulation. By leveraging surface-patterned MPs to enhance light absorption, the BPB-based photodetectors (PDs) achieved remarkable photoresponse in ultraviolet region, marked by a high on/off ratio (~ 5000), superior responsivity (2.24 A W−1), along with large detectivity (~ 1013 Jones) and low detection limit (68.7 nW cm−2). Additionally, the PDs showcased superior light communication and imaging capabilities even under weak-light illumination. Notably, the anisotropic nature of the surface-patterned MPs conferred excellent polarization sensitivity to the PD. These results represented the first demonstration of BPB perovskite in weak-light communication and imaging, as well as in polarized light detection. Our findings offer valuable insights into enhancing photodetector performance and optoelectronic applications through surface light management strategies.
Highlights:
1 The light management strategy is introduced into two-dimensional Dion-Jacobson (2D DJ) perovskite and subsequently elucidated both experimentally and theoretically.
2 The synthesis of surface-patterned BDAPbBr4 microplates with high crystalline quality demonstrates the first reported instance of growing such 2D DJ-type perovskite microplates.
3 The optimized device exhibits excellent photodetection performance under UV region. Moreover, this work represents the successful demonstration of BDAPbBr4 perovskite for UV weak-light communication, imaging, and polarized light detection.
Keywords
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References
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