Temperature/Component-Dependent Luminescence in Lead-Free Hybrid Metal Halides for Temperature Sensor and Anti-Counterfeiting

被引：36

作者：

Zhou, Guojun ^{[1
]}

Wang, Yanting ^{[1
]}

Mao, Yilin ^{[1
]}

Guo, Caihong ^{[1
]}

Zhang, Jian ^{[1
]}

Molokeev, Maxim S. ^{[2
,3
]}

Xia, Zhiguo ^{[4
]}

Zhang, Xian-Ming ^{[1
,5
]}

机构：

[1] Shanxi Normal Univ, Minist Educ, Sch Chem & Mat Sci, Key Lab Magnet Mol & Magnet Informat Mat, Taiyuan 030031, Peoples R China

[2] RAS, Fed Res Ctr KSC SB, Kirensky Inst Phys, Lab Crystal Phys, Krasnoyarsk 660036, Russia

[3] Siberian Fed Univ, Int Res Ctr Spect & Quantum Chem IRC SQC, Krasnoyarsk 660041, Russia

[4] South China Univ Technol, Sch Phys & Optoelect, Guangdong Engn Technol Res & Dev Ctr Special Opt F, State Key Lab Luminescent Mat & Devices,Guangdong, Guangzhou 510641, Guangdong, Peoples R China

[5] Taiyuan Univ Technol, Minist Educ, Coll Chem & Chem Engn, Key Lab Interface Sci & Engn Adv Mat, Taiyuan 030024, Shanxi, Peoples R China

来源：

ADVANCED FUNCTIONAL MATERIALS | 2024年 / 34卷 / 34期

基金：

中国国家自然科学基金;

关键词：

electron-transition; hybrid metal halides; optical-functional applications; self-trapped excitons; tunable photoluminescence; PEROVSKITES SYNTHESIS; BLUE; EMISSION;

D O I：

10.1002/adfm.202401860

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Hybrid metal halides (HMHs) have emerged as a promising platform for optically functional crystalline materials, but it is extremely challenging to thoroughly elucidate the electron transition coupled to additional ligand emission. Herein, to discover sequences of lead-free HMHs with distinct optically active metal cations are aimed, that is, Sb3+ (5s2) with the lone-pair electron configuration and In3+ (4d10) with the fully-filled electron configuration. (Me2NH2)4MCl6<middle dot>Cl (Me = -CH3, M = Sb, In) exhibits the superior temperature/component-dependent luminescence behaviors resulting from the competition transition between triplet-states (Tn-S0) self-trapped excitons (STEs) of inorganic units and singlet-state (S1-S0) of organic cations, which is manipulated by the optical activity levels of [SbCl6]3- and [InCl6]3-. The bonding differences between Sb3+/In3+ and Cl- in terms of electronic excitation and hybridization are emphasized, and the different electron-transition mechanisms are established according to the PL spectra at the extreme temperature of 5 to 305 K and theoretical calculations. By fine-tuning the B-site Sb3+/In3+ alloying, the photoluminescence quantum yield (PLQY = 81.5%) and stability are optimized at 20% alloying of Sb3+. This research sheds light on the rules governing PL behaviors of HMHs, as well as exploring the optical-functional application of aviation temperature sensors and access-control systems. (Me2NH2)4MCl6<middle dot>Cl (M = Sb, In) exhibits the superior temperature/component-dependent luminescence behaviors resulting from the competition transition between the triplet-states (Tn-S0) STEs of inorganic units and the singlet-state (S1-S0) of organic cations, which is manipulated by the optical activity levels of [SbCl6]3- and [InCl6]3-. This work sheds light on the different electron-transition mechanisms, as well as explores the optical-functional applications such as temperature sensors and anti-counterfeiting. image

引用

页数：9

共 87 条

[21] Highly Efficient and Tunable Emission of Lead-Free Manganese Halides toward White Light-Emitting Diode and X-Ray Scintillation Applications [J].