Dual-Emissive Mn-Doped Lead Halide Perovskite Nanocrystals as Background-Suppressed Latent Fingerprint Detection Probes

Hak-Sung Jung; Hyejin Choe; Jiwoo Park; Yejin Kim; Sang Jae Oh; Seung-Jin Ryu; Hee-Kyung Na; Seong-Joo Lee; Keir C Neuman; Junsang Cho; Jeong Hyun Shim

doi:10.1021/acsami.3c10883

Dual-Emissive Mn-Doped Lead Halide Perovskite Nanocrystals as Background-Suppressed Latent Fingerprint Detection Probes

ACS Appl Mater Interfaces. 2023 Oct 25. doi: 10.1021/acsami.3c10883. Online ahead of print.

Authors

Hak-Sung Jung¹, Hyejin Choe², Jiwoo Park², Yejin Kim², Sang Jae Oh³, Seung-Jin Ryu³, Hee-Kyung Na⁴, Seong-Joo Lee¹, Keir C Neuman⁵, Junsang Cho², Jeong Hyun Shim^{1

6}

Affiliations

¹ Quantum Magnetic Imaging Team, Korea Research Institute of Standards and Science, Daejeon 34113, Republic of Korea.
² School of Chemistry and Energy, Sungshin Women's University, Seoul 01133, Republic of South Korea.
³ Forensic Science Research Center, Korean National Police University, Asan-si 31539, Republic of South Korea.
⁴ Safety Measurement Institute, Korea Research Institute of Standards and Science, Daejeon 34113, Republic of South Korea.
⁵ Laboratory of Single Molecule Biophysics, National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, Maryland 20892, United States.
⁶ Department of Applied Measurement Science, University of Science and Technology, Daejeon 34113, Republic of Korea.

PMID: 37877789
DOI: 10.1021/acsami.3c10883

Abstract

Diverse strategies have been developed to visualize latent fingerprints (LFPs) that are undetectable by the naked eye. Among them, fluorescence-based approaches have emerged as an attractive method for enabling high-resolution LFP imaging. However, the use of fluorescent probes for LFP detection remains challenging due to cumbersome processing, low selectivity, and high background interference. Here, we demonstrate highly efficient, sensitive, and background-free LFP detection with dual-color emission arising from manganese (Mn)-doped lead halide perovskite (CsPb(Cl_1-yBr_y)₃) nanocrystals (NCs). The resulting bright, fluorescent, solid-state nanopowder (NP) permits the visualization of LFP ridge structures and the resolution of level 1-3 LFP features. The dual-color emission of the Mn-doped perovskite NP provides a simple, robust, and effective route to overcome background interference, thereby increasing the resolution and sensitivity of the LFP detection. The combination of the high quantum efficiency and dual emission of Mn-doped perovskite NP offers great potential for forensic science.

Keywords: Mn-doped lead halide perovskite nanocrystals; background interference; dual-emissive fluorescence; latent fingerprint detection; powder dusting.