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
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
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
Nano Select
·
2025
·
IF 3.5
Menglan Hu,Bo Meng,Bingxuan Du,Haichao Li
Carbon micro-embroidered spheres with excellent dispersibility and controllable particle size were prepared by leveraging the intrinsic interaction between the surfactant 3-(N,N-dimethyldodecylammonio) propanesulfonate (SB3-12) and sodium chloride (NaCl). Characterized by SEM and TEM, the overall morphology of the carbon micro-embroidered spheres is similar to that of an embroidered ball, while DLS analysis revealed that their diameters range from 1.5 to 3.5 µm. Further characterization via XRD, Raman spectroscopy, XPS, and FT-IR was conducted on the carbon micro-embroidered spheres. Through these analyses, it was observed that with increasing SB3-12 concentration, the diameter of the carbon micro-embroidered spheres tends to first increase and then decrease; concurrently, disorder and defects in the spheres increase, and the contents of carbon, nitrogen, and oxygen gradually rise. In addition, the optical properties of the carbon micro-embroidered spheres were characterized, exhibiting a broad fluorescence spectral range (375–460 nm). In general, novel carbon micro-embroidered spheres with optical properties were successfully prepared by utilizing the interaction between 3-(N,N-dimethyldodecylammonio) propanesulfonate and sodium chloride.
研究领域:
材料科学
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纳米技术
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物理化学
·
胶体与界面化学
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功能材料
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Guolun Zhang,Chengzhi Yang,Qilin Wei,Jiangjie Long,Xiaodong Shen,Yijun Chen,Bao Ke,Weizheng Liang,Xianci Zhong,Bingsuo Zou
In recent years, low-dimensional organic–inorganic hybrid metal halides (OIHMHs) have shown excellent photophysical properties due to their quantum structure, adjustable energy levels, and energy transfer between inorganic and organic components, which have attracted extensive attention from researchers. Herein, we synthesize a zero-dimensional (0D) OIHMH, Sb3+:(Gua)3InCl6, by introducing Sb3+ into (Gua)3InCl6, which undergoes a significant enhancement of the emission peak at 580 nm with the photoluminescence quantum yield (PLQY) boosted from 17.86 to 95.72% when excited at 340 nm. This boost in photoluminescence of the doped sample was studied by combining ultrafast femtosecond transient absorption, temperature-dependent photoluminescence (PL) spectra, and density functional theory (DFT) calculation, revealing the process of self-trapped exciton (STE) recombination to emit light at both Sb and In sites in this 0D structure simultaneously. This material with the lowest dark STE level at the In site for emission in the undoped sample can amazingly yield very strong emission in the doped sample, which has never been observed before. Finally, we tested its application in a photoelectric device. This work not only helps to gain a deeper understanding of the formation of STEs in In-based halides but also plays a certain guiding role in the design of new luminescent materials.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Wen Li,Yongrun Dong,Ting Xie,Tongzhou Li,Chuang Ning,Tao Huang,Zequan Li,Wei Gao,Bingsuo Zou
Lead-free double perovskites (DPs) have superior phase stability and optical properties, which make them competitive for future applications in illumination and displays. However, the preparation of DPs was mainly based on high-temperature heating and hydrochloric acid as a solvent to form powders, which increased the risk and cost of the preparation process and limited its further application. In this study, the growth of Cs2NaInCl6: Sb3+ DPs in polyvinylidene difluoride (PVDF) films was achieved using an in situ fabrication strategy with DMSO as the solvent. The prepared Cs2NaInCl6: Sb3+@PVDF composite films (CFs) can achieve a bright blue emission under 302 nm irradiation. To achieve the optimal luminescent performance of CFs, the photoluminescence (PL) intensity of Cs2NaInCl6: Sb3+@PVDF CFs under various in situ preparation conditions was compared. In addition, the photoluminescence quantum yield (PLQY) of CFs was increased from 0.72% to 83.77% by adjusting the doping amount of Sb3+, and the fluorescence lifetimes t1 and t2 were 131.08 and 1048.52 ns, respectively. Temperature-dependent PL spectroscopy and density functional theory (DFT) calculations indicate that these excellent optical properties are derived from the self-trapped excitons (STEs) at the [SbCl6]3– octahedron and [InCl6]3– octahedron connected via Cl–Na–Cl. The CFs also demonstrated excellent environmental stability, maintaining a relatively stable PL intensity even under conditions of water immersion, high temperatures, and ultraviolet (UV) radiation. Finally, we used the CFs to assemble a blue light-emitting device (LED), which showed good and stable blue emission performance at different currents. This work can provide a new idea for preparing DPs, which is conducive to promoting their commercial application in high-performance optoelectronic devices.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Advanced Optical Materials
·
2021
·Vol. 9
·期 12
·2100434
·
IF 9.926
Xingwen Cheng,Renfu Li,Wei Zheng,Datao Tu,Xiaoying Shang,Zhongliang Gong,Jin Xu,Siyuan Han,Xueyuan Chen
All-inorganic lead-free metal halides doped with ns 2 -metal ions have shown great promise in optoelectronics and photovoltaics owing to their superior optical properties. Herein, a strategy is reported for tailoring the optical properties of 0D A 2 InX 5 ⋅H 2 O and A 3 InX 6 (A = Cs, Rb; X = Cl, Br) crystals via Sb 3+ doping, and the excited-state dynamics of Sb 3+ is unveiled through temperature-dependent photoluminescence (PL) and femtosecond transient absorption spectroscopies. Owing to the spatially confined 0D structure of the In-based halides, Sb 3+ ions experience a strong Jahn–Taller distortion on the excited state, which results in intense PL from Sb 3+ with a broad emission band and a large Stokes shift. Through the control of A cation and the octahedral unit, tunable Sb 3+ emissions (490−750 nm) with PL quantum yields up to 91.8% are achieved in these 0D In-based halides. These findings provide fundamental insights into the excited-state dynamics of Sb 3+ in 0D metal halides, thus laying a foundation for future design of luminescent lead-free 0D metal halides through ns 2 -metal doping towards versatile applications.
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 Physical Chemistry C
·
2023
·
IF 3.7
Bo Zhou,Yasin Muhammad,Dong Ding,Zexiang Liu,Hanlin Hu,Ye Wang,Haizhe Zhong,Yumeng Shi,Henan Li
Multi-ion codoping strategies have been intensively studied for metal halide perovskite optical engineering. Although tunable dual broadband emissions can be achieved by pairing Sb3+/Mn2+ doping centers in metal halide hosts, there have been few reports of highly efficient light emission with a near-unity photoluminescence quantum yield (PLQY). In this study, Mn2+ dopants are incorporated into a Sb3+-doped Rb4CdCl6 system. Tunable dual emissions and a substantial increase in the PLQY from ∼60% to near-unity (98%) are achieved. Energy transfer is strong and localized and occurs only between the Sb3+ donor and the adjacent Mn2+ acceptor. The green self-trapped exciton emission (524 nm) is converted into a red d–d emission (607 nm) without changing the excitation profile. The Sb3+ optical centers without adjacent Mn2+ species maintained their original green emission. Spectroscopic and probabilistic investigations showed that the luminescent and thermally quenched Sb3+ optical centers play identical roles in the energy-transfer process, and nonradiative recombination was successfully inhibited. These findings clarify how Sb3+ and Mn2+ dopants couple in the metal halide host and facilitate the design of high-performance materials that give tunable broadband fluorescence via an energy-transfer process.
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
NANOTECHNOLOGY
·
2023
·Vol. 35
·期 11
·115203
·
IF 3.5
Qingyong Qin,Yu Liu,Ge Gao,Zhaoqiong Chen,Zejiang Gao,Li Chen,Xianci Zhong,Bingsuo Zou
Lead-free halide double perovskites are considered as one of the most promising materials in optoelectronic devices, such as solar cells, photodetectors, and light-emitting diodes (LEDs), due to their environmental friendliness and chemical stability. However, the extremely low photoluminescence quantum yield (PLQY) of self-trapped excitons (STEs) emission from lead-free halide double perovskites impedes their applications. Herein, Sb3+ ions were doped into rare-earth-based double perovskite Cs2NaScCl6 single crystals (SCs), resulting in a large enhancement of PLQY from 12.57% to 87.37%. Moreover, by co-doping Sb3+ and Ho3+ into Cs2NaScCl6 SCs, the emission color can be tuned from blue to red, due to an efficient energy transfer from STEs to Ho3+ ions. Finally, the synthesized sample was used in multicolor LED, which exhibited excellent stability and optical properties. This work not only provides a new strategy for improving the optical properties of Cs2NaScCl6 SCs, but also suggests its potential application in multicolor LEDs.
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
Engineering Reports
·
2025
·Vol. 7
·期 9
·e70371
·
IF 2
Jianxia Guo,Haichao Li,Xiaofei Kang
The research field focused on regulating the morphology and dimensions of carbon nanostructures is experiencing steady advancement. This paper proposes a low-cost, simple, and easy-to-operate experimental method involving confined in situ carbonization. Through carbonization of sulfate-coated N -dodecyl- N , N -dimethyl-3-ammonio-1-propanesulfonate (SB3-12), a rare icosahedral carbon nanostructure was successfully synthesized. Scanning electron microscopy (SEM) characterization revealed that this polyhedron exhibits a stable and symmetrical architecture composed of 2 hexagonal and 18 quadrilateral facets. Comprehensive characterizations including Fourier-transform infrared spectroscopy (FTIR), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), and X-ray diffraction (XRD) were employed to investigate the structural properties of the synthesized material. This study holds significance for exploring novel regulation strategies for carbon nanostructures and their future development.
研究领域:
纳米材料学
·
碳材料化学
·
表面与界面科学
·
功能材料
·
物理化学
✓ 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
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
危险品化学品经营许可证（带存储）