JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Jiayu Liao,Peixiong Zhang,Xiaochen Niu,Hong Hong,Hao Yin,Zhen Li,Yin Hang,Zhenqiang Chen
A 2 BB’ X 6 double perovskite has recently been considered as a potential substitute for lead-based halide perovskite . In particular, the lead-free Cs 2 AgInCl 6 material possesses excellent moisture and thermal stability. However, the wide bandgap of the Cs 2 AgInCl 6 host limits its optical properties . Doping with active elements is a unique avenue to endow Cs 2 AgInCl 6 with excellent optical properties . Here, a strategy is proposed to explore the efficiency of near-infrared (NIR) emissions in Ln 3+ (Ln Nd, Yb) ions doped Cs 2 AgInCl 6 microcrystal by the codoping of Sb 3+ ion for the first time. The incorporation of Sb 3+ ion emerges a new optical absorption channel at a longer wavelength (>350 nm) and reduces the electron bandgap. Under the excitation at 365 nm, Sb 3+ and Ln 3+ (Ln Nd, Yb) co-doped Cs 2 AgInCl 6 show the efficient NIR emission peaking at around 1000 nm, attributing to the effective energy transfer from Sb 3+ to Yb 3+ or Nd 3+ f-electrons. Accordingly, the photoluminescence mechanism and environmental stability of Sb 3+ and Ln 3+ (Ln Nd, Yb) co-doped Cs 2 AgInCl 6 microcrystal were also discussed in detail. This work demonstrates the availability of the Sb 3+ doping tactics to realize efficient NIR emission in Ln 3+ (Ln Nd, Yb) doped Cs 2 AgInCl 6 microcrystal.
研究领域:
材料科学
·
光学
✓ 已验证
DOI
高影响因子
JOURNAL OF RARE EARTHS
·
2023
·
IF 4.9
Biao Zhou,Xiangtong Zhang,Ranran Hu,Ruixue Hou,William W. Yu
Metal halide perovskites exhibit promising prospect in light-emitting diodes, solar cells, photodetectors and bioimaging. However, the workhorse of metal halide perovskites relies on toxicity lead element, which severely damages human body and environment. Among lead-free perovskites, Cs 2 NaInCl 6 double perovskite is one of the most promising candidates because of its great stability and easy synthesis, but suffers inadequate optical performance. Here, we doped Sb 3+ and Sm 3+ into Cs 2 NaInCl 6 nanocrystals by a hot injection method. Cs 2 NaInCl 6 :Sb 3+ exhibits blue emission at 447 nm. Cs 2 NaInCl 6 :Sm 3+ ,Sb 3+ nanocrystals simultaneously generate the blue emission of Sb 3+ and the multiple emissions of Sm 3+ at 565, 602, 650 and 710 nm. With the increase of Sm 3+ feed ratio, the emission color of Cs 2 NaInCl 6 :Sm 3+ ,Sb 3+ gradually moves to cold white region at (0.27, 0.28) in CIE chromaticity diagram and correlated color temperature of 11,840 K. This work shows the potential application of Cs 2 NaInCl 6 :Sm 3+ ,Sb 3+ nanocrystals as a single-component cold white emitter.
研究领域:
材料科学
·
光学
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry C
·
2023
·Vol. 11
·期 32
·11010-11016
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IF 6.4
Fan Chen,Xiao-Jun Wang,Wenhao Bai,Xuehu Zhang,Wen Hao,Changhua Zhang,Tongtong Xuan
Zero-dimensional (0D) lead-free halide perovskites are emerging as promising light-emitters, which can be applied as light conversion materials for illumination and display. Herein, we prepared a series of Sb3+:Rb2InCl5·H2O perovskites by a simple and efficient coprecipitation method. The Rb2InCl5·H2O perovskite gives no emission due to the parity-forbidden transition. When Sb3+ is doped into Rb2InCl5·H2O, radiative transition occurs. Under 365 nm excitation, the Sb3+:Rb2InCl5·H2O perovskites show an intense orange-red emission peak at 615 nm, ascribed to the 3P1 to 1S0 transition of Sb3+. The brightest luminescence of Sb3+:Rb2InCl5·H2O was achieved by doping 40%Sb3+, with a high photoluminescence quantum yield (PLQY) of 62.1% and an external quantum efficiency (EQE) of 30.2%. Furthermore, the prepared Sb3+:Rb2InCl5·H2O perovskite exhibits a distinguished thermal stability. At 150 °C, its PL intensity remains 68% of that measured at room temperature, with a high thermal activation energy of 0.184 eV. By combining Sb3+:Rb2InCl5·H2O with a blue-emitting Eu2+:BaMgAl10O17 (Eu2+:BAM) phosphor, bright warm-white light with a color rendering index of 88 and a correlated color temperature of 3242 K was achieved. To sum up, the prepared Sb3+:Rb2InCl5·H2O orange-red perovskites have the advantages of suitable excitation and emission peak positions, high emission intensity, high PLQY and EQE, excellent stability, and environmental friendliness, making them very attractive in the field of lighting and displays.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry C
·
2024
·Vol. 12
·期 38
·15761-15767
·
IF 5.7
Zihan Chen,Xiuxiu Peng,Wenjun Zhang,Wei Gao,Chengyue Xin,Zhongfa Li,Xiaoyan Yu
Single-host white light-emitting diodes with good stability and simple fabrication methods have attracted extensive attention from researchers. In this study, Cs2NaGdCl6:Sb3+ with blue emission is synthesized by introducing Sb3+ into Cs2NaGdCl6. After doping Tb3+ into Cs2NaGdCl6:Sb3+, the sample achieves a tunable ion emission from blue to green. The energy transfer relationship between Sb3+ and Tb3+ is explored. White phosphors with CIE coordinates of (0.34, 0.33) are obtained by introducing Ho3+ into Cs2NaGdCl6:Sb3+/Tb3+ double perovskites. This work provides a new option for white light emission of halide perovskites doped with Ln3+.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
Inorganic Chemistry Frontiers
·
2021
·Vol. 8
·期 17
·4035-4043
·
IF 6.569
Ruxin Liu,Wenjun Zhang,Guojing Li,Wenjing Liu
Advanced anti-counterfeiting materials have great research significance in the fields of economy, safety and human health. Compared with independent color mixed anti-counterfeiting materials, ultraviolet (UV) excitation wavelength-dependent discoloration, which can realize the change of the emission peak shape and color under different excitation wavelengths, is more attractive. In this work, the Sb-doped Cs2ZrCl6 vacancy-ordered double perovskite was designed and synthesized for anti-counterfeiting materials. Due to the singlet and triplet transitions of Sb3+ ions and self-trapping exciton (STE) emission of the Cs2ZrCl6 host, the material showed emission variability from blue to orange-yellow color. In addition, room temperature synthesis and excellent air and humidity stability further enhanced the potential of Sb-doped Cs2ZrCl6 for application.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Yiwei Wang,Yue Li,Yongbo Ma,Yachong Liu,Haolin Lu,Huanxin Yang,Wenda Sun,Xiangxiang Chen,Wei Xiong,Libing Zhang,Xiyan Li
Lead-free halide perovskites are highly appealing for optoelectronic applications due to their non-toxic nature and exceptional optical properties. In this study, we report the co-doping of Sb 3+ and Sm 3+ in the rare-earth-based double perovskite Cs 2 NaGdCl 6 . The incorporation of Sb 3+ ions effectively tunes the electronic structure, achieving a photoluminescence quantum yield (PLQY) of up to 87.9 %. The Sb 3+ /Sm 3+ -co-doped Cs 2 NaGdCl 6 exhibits excitation wavelength-dependent emission characteristics, transitioning from blue emission under 260 nm excitation to white emission under 365 nm excitation. Furthermore, the Sb 3+ /Sm 3+ -co-doped Cs 2 NaGdCl 6 material demonstrates advanced multifunctional applications in light-emitting diode (LED) lighting and fluorescence anti-counterfeiting technologies. These findings hold significant implications for the utilization of rare-earth-based double perovskites in optoelectronic devices.
研究领域:
材料科学
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光学
·
电子工程
✓ 已验证
产品关联
DOI
高影响因子
Materials
·
2025
·Vol. 18
·期 9
·1896
·
IF 3.2
Yanbiao Li,Yuefeng Gao
Stable and efficient inorganic lead-free double perovskites are crucial for high-reliability optoelectronic devices. However, dual-doped perovskite phosphors often suffer from poor color stability due to differences in thermal activation energies and electron–phonon interactions between the doped ions. To address this, single-doped Sb3+-incorporated Rb2HfCl6perovskite crystals were synthesized via a co-precipitation method. Under UV excitation, Rb2HfCl6:Sb exhibits broad dual emission bands, attributed to singlet and triplet self-trapped exciton radiative transitions induced by Jahn–Teller distortion in [SbCl6]3−octahedra. This dual emission endows the material with high sensitivity to excitation wavelengths, enabling tunable luminescence from cyan to orange-red across 400–800 nm. Utilizing this dual emission, a white LED was fabricated, showcasing a high color rendering index and excellent long-term stability. Remarkably, the material exhibits breakthrough thermal stability, maintaining more than 90% of its emission intensity at 100 °C, while also exhibiting remarkable resistance to humidity and oxygen exposure. Compared to co-doped phosphors, Rb2HfCl6:Sb offers advantages such as environmental friendliness, simple fabrication, and stable performance, making it an ideal candidate for WLEDs. This study demonstrates notable progress in developing thermally stable and reliable optoelectronic devices.
研究领域:
材料科学
·
光学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Mingjie Dan,Zhichao Deng,Zijian Kong,Yi Yu,Xiurong Zhu,Huan Ye,Yingying Wang,Zishan Li,Mei Lai,Kenneth R. Poeppelmeier
The realization of white light emission in a single matrix has always been a problem that researchers are working on. As a new luminescent material, lead-free halide double perovskites(DPs) has made this idea possible due to its wide emission spectrum. However, the drawback of low photoluminescence quantum yield (PLQY) originated from self-trapping excitons (STEs) has seriously hindered their development and applications. In this study, we focused on Cs 2 NaGdCl 6 (CNGC) DP nanocrystals, and enhanced the STEs, corresponding to the much developed blue emission intensity at about 470 nm by introducing Sb 3+ , associated with the significant increase of PLQY up high to 90.09 % at the optimal doping level. To achieve the all-spectrum white light within this phosphor, the lack wavelengths at green and red region has to be compensated and Sm 3+ is an ideal candidate. Therefore, the spectrum of CNGC:Sb 3+ was expanded via further co-doping Sm 3+ and consequently the emission color is tuned from blue to white contributed by the effective energy transfer from STEs to Sm 3+ . Finally, an UV-excited LED device based on CNGC:Sb 3+ /Sm 3+ phosphor was fabricated and strong white light emitting was achieved. The CIE of the device coordinates in the cold white region of (0.33, 0.30), associated with the color temperature of 5794 K. All the results indicate that the CNGC:Sb 3+ /Sm 3+ phosphor possesses great potential in the application of full spectrum lighting as prominent single-component white light emitter.
研究领域:
材料科学
·
光学工程
✓ 已验证
产品关联
DOI
高影响因子
INORGANIC CHEMISTRY
·
2022
·
IF 5.436
Xianfu Meng,Qilin Wei,Wenchao Lin,Tao Huang,Shuaigang Ge,Zongmian Yu,Bingsuo Zou
Metal halide perovskites have flexible crystal and electronic structures and adjustable emission characteristics, which have very broad applications in the optoelectronic field. Among them, all-inorganic perovskites have attracted more attention than others in recent years because of their characteristics of large diffusion length, high luminescence efficiency, and good stability. In this work, Sb3+-doped RbCdCl3 crystalline powder was synthesized by a simple hydrothermal method, and its luminescence properties were studied, which showed a broad emission band with a large Stokes shift and efficient yellow light emission at about 596 nm at room temperature with a photoluminescence quantum yield of 91.7%. The emission came from the transition of the self-trapped exciton 1 (STE1) out of 3Pn (n = 0, 1, and 2) to S0 due to strong electron–phonon coupling, which scaled with increasing temperature. Moreover, its emission color became white at low temperatures due to the occurrence of transition of other self-trapped exciton 0 (STE0) state emission out of the 1S states of Sb ions to S0 in the lattice. These emission color changes may be used for temperature sensing, and this Sb3+-doped RbCdCl3 material expands the knowledge of the efficient luminescent inorganic material family for further applications of all-inorganic perovskites.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INORGANIC CHEMISTRY
·
2022
·
IF 5.436
Xinyu Shi,Zhilin Li,Mengyan Cao,Zhihui Rao,Xiujian Zhao,Xiao Gong
Due to the toxicity and instability issues of lead halide perovskites, lead-free perovskites have recently emerged as a viable alternative. However, significant optical band gaps of lead-free perovskites exert influence on their luminescent properties. Fortunately, the addition of dopants becomes an efficacious solution. The current widely utilized methods for synthesizing perovskites almost require high temperatures, a long period, and atmosphere protection, which cost more energy and resources. In this paper, we report that Rb2ZrCl6:xSb3+ perovskite phosphors can be easily prepared by a wet grinding approach at room temperature, which is a more efficient and facile process. Due to the self-trapped excitons of the host structure and Sb3+ ions, the produced samples display blue-white and orange fluorescence under UV lamp irradiation at 254 and 365 nm, respectively. In the photoluminescence spectrum, the doped perovskite exhibits an emission peak at 630 nm under excitation at 365 nm. Importantly, the prepared phosphors have tunable emissions related to the excitation wavelength. In addition, our produced powders show remarkable stability at room temperature, laying the foundations for this approach to be widely used in perovskite production.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MATERIALS RESEARCH BULLETIN
·
2021
·
IF 4.641
Jidong Deng,Jiao Xun,Wei Shen,Ming Li,Rongxing He
Although lead halide perovskite nanocrystals (PNCs) materials exhibit excellent optoelectronic properties, their instability and toxicity seriously limit their wide-spread application. Herein, we described a new type of highly-luminescent Sb 3+ -doped dual-phase CsPb 2 Br 5 /CsPbBr 3 PNCs material, synthesized by a modified ligand-assisted re-precipitation (LARP) method at room temperature. The obtained Sb 3+ -doped dual-phase PNCs achieve high photoluminescence quantum yields (PLQYs) and excellent light, water, and thermal stability. Additionally, the fast anion exchange involving Sb 3+ -doped dual-phase PNCs effectively extends their photoluminescence across the entire visible spectral region. The large-scale synthesis and optical tunability of low-toxicity Sb 3+ -doped dual-phase CsPb 2 Br 5 /CsPbBr 3 PNCs are advantageous for future applications in optoelectronic devices.
研究领域:
材料科学
·
光学
✓ 已验证
DOI
高影响因子
INORGANIC CHEMISTRY
·
2024
·
IF 4.3
Xiaowei Liu,Kailei Li,Wei Shao,Wei Shen,Ming Li,Lei Zhou,Rongxing He
Low-dimensional hybrid metal halides are an emerging class of materials with highly efficient photoluminescence (PL), but the problems of poor stability remain challenging. Sn(IV)-based metal halides show robust structure but exhibit poor PL properties, and the structure–luminescence relationship is elusive. Herein, two Sn(IV)-based metal halides (compounds 1 and 2) with the same constituent ((C6H16N2)SnCl6) but different crystal structures have been prepared, which however show poor PL properties at room temperature due to the absence of active ns2 electrons. To improve materials’ PL properties, Sb3+ with active 5s2 electrons was embedded into the lattice of Sn4+-based hosts. As a result, efficient emissions were achieved for Sb3+-doped compounds 1 and 2 with a maximum PL efficiency of 14.28 and 62%, respectively. Experimental and calculation results reveal that the smaller distorted lattice structure of the host could result in the blueshift of the emission from Sb3+. Thus, a tunable color from red to orange was realized. Benefiting from the broadband efficient emission from Sb3+-doped compound 2, an efficient white light-emitting diode with a high color rendering index of up to 92.3 was fabricated to demonstrate its lighting application potential. This work promotes the understanding of the influence of robust Sn(IV)-based host lattice on the PL properties of Sb3+, advancing the development of environmentally friendly, low-cost, and high-efficiency Sn(IV)-based metal halides.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）