Synthesis of MAPbBr3-Polymer Composite Films by Photolysis of DMF: Toward Transparent and Flexible Optical Physical Unclonable Functions (PUFs) with Hierarchical Multilevel Complexity

被引：20

作者：

Minh, Duong Nguyen ^{[1
,2
]}

Nguyen, Lan Anh Thi ^{[3
]}

Nguyen, Quynh H. H. ^{[4
,5
]}

Vu, Thanh Van ^{[1
]}

Choi, Jinwoo ^{[1
]}

Eom, Sangwon ^{[1
]}

Kwon, S. Joon ^{[6
,7
]}

Kang, Youngjong ^{[1
,8
,9
]}

机构：

[1] Hanyang Univ, Dept Chem, Seoul 04763, South Korea

[2] Hanyang Univ, Res Inst Convergence Basic Sci, Seoul 04763, South Korea

[3] Hanyang Univ, Inst High Pressure, Dept Phys, Seoul 04763, South Korea

[4] Hanyang Univ, Res Inst Nat Sci, Seoul 04763, South Korea

[5] Hanyang Univ, Ctr New Direct Organ Synth CNOS, Seoul 04763, South Korea

[6] Sungkyunkwan Univ SKKU, Sch Chem Engn, Suwon 16419, South Korea

[7] SKKU Inst Energy Sci & Technol SIEST, Suwon 16419, South Korea

[8] Hanyang Univ, Res Inst Nat Sci, Seoul 04763, South Korea

[9] Hanyang Univ, Inst Nano Sci & Technol, Seoul 04763, South Korea

来源：

ADVANCED MATERIALS | 2023年 / 35卷 / 06期

基金：

新加坡国家研究基金会;

关键词：

composite film; hierarchical patterning; multilevel complexity; perovskite; photolysis; PUF; BLOCK-COPOLYMERS; PEROVSKITE;

D O I：

10.1002/adma.202208151

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Physical entities with inherent randomness have been investigated as anti-counterfeiting labels based on physical unclonable functions (PUFs). Herein, a transparent and flexible optical PUF label associated with multilevel complexity is demonstrated by taking advantage of the optical properties of hierarchical morphologies of the composite film composed of metal halide perovskite nanoparticles (MAPbBr(3) NPs) and the intrinsic spinodal-decomposition-like phase separation of polymer blend (PMMA/PS blend). Due to the combinatorial effects of the photolysis synthesis of MAPbBr(3) and the thermodynamic instability of the PMMA/PS blend, randomized patterns emerge at two-level scales. These patterns are intrinsically non-deterministic, and therefore, the PUF labels from the multilevel random patterns are challenging to replicate. This is mainly attributed to random spot patterns (higher-level patterns) confined within intricate bicontinuous patterns (lower-level patterns).

引用

页数：11