INORGANIC CHEMISTRY
·
2024
·
IF 4.3
Xunliang Jiang,Haoqing Ding,Fengxi Yang,Fusheng Luo,Zhixing Gan,Zhiping Fan,Fei Gao,Zhenzhi Cheng,Guangsheng Luo,Weiping Zhou
The lead-free halide perovskites possess nontoxicity and excellent chemical stability, whereas relatively weak luminescence intensity limits their potential in practical applications. Therefore, strengthening the luminescence intensity and expanding application fields are urgent tasks for the development of lead-free halide perovskites. In this paper, antimony-doped Cs2NaScCl6 crystals synthesized by a solvothermal method emit bright, deep blue photoluminescence at 447 nm. The photoluminescence (PL), photoluminescence excitation (PLE), and absorption spectra demonstrate that Sb3+ doping effectively activate the intrinsic “dark self-trapped exciton (STE),” leading to an impressive photoluminescence quantum yield (PLQY) value of 78.31% for 1% Sb3+ doping. Furthermore, the luminescence intensity remains above 92% compared with the fresh sample without secondary phases detected even after 90 days under environmental conditions. To expand the emission spectra, rare-earth Sm3+ is further incorporated into Cs2NaScCl6:1% Sb3+ crystals. The results show that Sb ions not only enhance intrinsic STE luminescence but also serve as sensitizers to boost the red-light emission of Sm3+, leading to a significant 500-fold increase in red emission intensity. Finally, the PLQY reaches a stunning 86.78%. These findings provide valuable insights in the design of Sb ion-doped lead-free double perovskites, broadening the application fields in various optoelectronic devices.
研究领域:
材料科学
·
光学
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DOI
PubMed
高影响因子
Science China-Materials
·
2026
·Vol. 69
·期 5
·2598-2607
·
IF 7.7
Li Xingjun,Zhao Xia,Wang Liqing,Liu Sizhe,Gong Jiacheng,Luo Xiaoli,Lu Shan,Chen Xueyuan
Chiral organic-inorganic hybrid metal halides (OIHMHs) have emerged as multifunctional materials with remarkable structural diversity and chiroptical properties. Despite significant progress, current chiral OIHMHs predominantly exhibit circularly polarized luminescence (CPL) in the visible spectrum, whereas achieving ultraviolet and near-infrared (NIR) CPL remains challenging. Herein, we report a series of lead-free chiral zero-dimensional (0D) OIHMHs, ( R / S -DACH) 2 In 2 Br 10 :Sb 3+ /Yb 3+ (DACH = 1,2-diaminocyclohexane), featuring spectrally tunable CPL emissions covering the visible to NIR regions. Single-crystal X-ray diffraction analysis combined with circular dichroism and CPL spectroscopy revealed that robust hydrogen-bonding interactions between organic cations and inorganic emitters in the structure play a crucial role in the chirality expression of the hybrid halides. The Sb 3+ -doped ( R / S -DACH) 2 In 2 Br 10 single crystals (SCs) exhibited intense broadband emission at 644 nm, originating from the radiative transition of Sb 3+ ions from 3 P 1 to 1 S 0 . This emission achieved a record photoluminescence quantum yield of 49.9% (two orders of magnitude higher than that of pristine crystals) and a luminescence dissymmetry factor ( g lum ) of ±7.1×10 −3 . Notably, Sb 3+ /Yb 3+ co-doped ( R / S -DACH) 2 In 2 Br 10 SCs simultaneously generated dual-band CPL emissions at 644 nm ( g lum = ±2.1×10 −2 ) and 994 nm ( g lum = ±6.8×10 −3 ), representing an important example of NIR-CPL activity realized in OIHMHs. The fabricated LED device based on ( R -DACH) 2 In 2 Br 10 :2.7%Sb 3+ SCs exhibited bright orange emission with a color-rendering index of 78.4, along with excellent spectral and operational stabilities. These findings not only establish a unique design strategy for tailoring broadband CPL but also expand the application potential of chiral metal halides in advanced optoelectronic technologies.
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Small
·
2026
·
IF 11.8
Xue-Ju Huang,Zhan Wei,Shunyu Yu,Ling Ding,Yanhong Zhou,Gui-Gen Wang
With the rapid development of distributed sensor systems, direct-current triboelectric nanogenerators (DC-TENGs) based on tribovoltaic effects have attracted wide attention. However, the development of efficient semiconductor materials for enhanced output remains challenging. Herein, air-stable Sb 3+ doped CsBi 3 I 10 films were synthesized, and DC-TENG devices based on Al/CsBi 2.7 Sb 0.3 I 10 dynamic Schottky junction were then developed for harvesting mechanical and solar energy. Among a series of Sb 3+ doping concentrations, the CsBi 2.7 Sb 0.3 I 10 film exhibits the narrowest FWHM (Full Width at Half Maximum) value and the best crystallinity. Being ascribed to more suitable energy-level alignment, reduced trap states, and especially increased dielectric constant, the optimized Al/CsBi 2.7 Sb 0.3 I 10 DC-TENG delivers a short-circuit current density of 31.4 A m −2 and an open-circuit voltage of 4.3 V under dark conditions, with respective increase of approximately 29.8% and 26.5% compared with the Al/CsBi 3 I 10 DC-TENG. Under simulated sunlight illumination, the output further increases to 44.1 A m −2 and 7.5 V, which is attributed to the contribution of photogenerated carriers during the dynamic contact process. Moreover, the device maintains stable output performance after being placed in ambient air for 49 days. This work provides a feasible strategy for developing lead-free perovskite semiconductor-based DC-TENGs with enhanced electrical output and multi-energy harvesting capability.
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高影响因子
Journal of Materials Chemistry A
·
2024
·Vol. 12
·期 17
·10260-10268
·
IF 10.7
Yingfen Li,Xingye Chen,Runxi Wang,Nian Zhou,Fang Huang,Jun Zhao,Zhenghua Su,Shuo Chen,Guangxing Liang
In this study, Sb2S3 was introduced into the two-step selenization process to promote bottom grain growth and reduce the surface roughness of the Cu2ZnSn(S,Se)4 light-absorber layer. The introduction of Sb doping in Cu2ZnSn(S,Se)4 can passivate bulk and interface defects and a small conduction band offset (CBO) can be found, which facilitate the improvement of heterojunction carrier transport properties. Similarly, simulations illustrated that Sb doping improved device efficiency by controlling bulk and interface defects and band alignment. This optimized method facilitated the penetration of Sb, resulting in a high-quality CZTSSe absorber layer. Ultimately, the research culminated in a significant enhancement, yielding a solar cell with an impressive efficiency of 13.11%. These findings offer new possibilities for kesterite solar cells and advance the potential of CZTSSe materials in thin film photovoltaic applications.
研究领域:
材料科学
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光伏技术
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半导体物理
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薄膜太阳能电池
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无机功能材料
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固态电子学
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DOI
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Xiangyan Yun,Hailin Zhou,Yanrong Zhu,Zexiang Liu
Lead-free organic–inorganic hybrid metal halides (OIHMHs) provide an ideal platform for designing multifunctional photonic materials owing to their flexible structure and tunable excited-state dynamics. Herein, excitation-dependent and color-tunable luminescence was achieved in zero-dimensional TEA 2 InCl 5 :Bi 3+ /Sb 3+ , where the coexistence of Bi 3+ - and Sb 3+ -related emissive centers (EM1–EM3) enables broadband emission spanning from blue to orange-red. The phosphor exhibits an impressive PLQY of 55.21 % and remarkable spectral tunability driven by excitation wavelength or dopant ratio modulation. More importantly, the Bi 3+ -related emission demonstrates strong thermal sensitivity of lifetime, yielding a maximum relative sensitivity of 4.76 % K −1 from 90 to 340 K. The thermally activated nonradiative relaxation of self-trapped excitons (STEs) governs this lifetime-dependent optical thermometry behavior. The excitation-dependent color-tunable behavior of the material enabled the realization of multi-level optical anti-counterfeiting patterns. This study provides new insight into excited-state coupling in Bi 3+ /Sb 3+ co-doped OIHMHs and offers a promising route toward high-performance luminescent systems integrating temperature sensing and information security.
研究领域:
材料科学
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光子学
·
光学传感
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防伪技术
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发光材料
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DOI
高影响因子
Advanced Optical Materials
·
2025
·Vol. 13
·期 36
·e03160
·
IF 7.2
Wenlong Ma,Die Xu,Long Zhao,Tongtong Xuan,Xuejiao Wang,Rong-Jun Xie,Xiaojun Wang
Overcoming the long-standing “cyan gap” remains a critical challenge in the development of full-spectrum white light-emitting diodes (wLEDs). In this work, a 0D cyan–green-emitting phosphor, Cs 3 LuCl 6 : Sb 3+ , synthesized via a facile HCl-assisted solid-state method is presented. Under 365 nm excitation, Cs 3 LuCl 6 : Sb 3+ exhibits a broad emission band centered at 525 nm with a full width at half maximum (FWHM) of ≈105 nm and an exceptional photoluminescence quantum yield (PLQY) of 99%. Hybrid density functional theory calculations reveal that Sb 3+ incorporation narrows the bandgap from 5.96 to 3.75 eV and induces strong hybridization among Sb 5s, Cl 3p, and Lu 5d orbitals, promoting the formation and radiative recombination of self-trapped excitons. Temperature-dependent photoluminescence measurements confirm robust thermal stability, with 82% of the emission intensity retained at 398 K and an activation energy of 0.3488 eV. When integrated with BaMgAl 10 O 17 :Eu 2+ (blue) and K 2 SiF 6 :Mn 4+ (red) on a 365 nm UV LED chip, the fabricated wLEDs achieve a high color rendering index (CRI) of 94 and a correlated color temperature (CCT) of 5565 K. These results establish Cs 3 LuCl 6 : Sb 3+ as a highly promising cyan–green phosphor for full-spectrum wLEDs.
研究领域:
材料科学
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光电子学
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固态照明
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荧光粉化学
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发光材料
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2024
·
IF 11.2
Zhuo Li,Nan Yang,Shiqin Ding,Ziwang Zhang,Weijie Huang,Zhibin Ye,Meihua Zhao,Jianxin Shi
Inorganic lead-free double perovskites have the advantages of low toxicity, broadband emission, and good stability, which make them promising luminescent materials for lighting applications. However, due to the limited regulation of their self-trapped exciton emission, it is still greatly challenging to achieve white light emitting from a single double perovskite host. Herein, efficient and tunable white light is realized in Cs 2 NaInCl 6 : Sb 3+ , Tb 3+ , Sm 3+ double perovskite by controlling the ratios of the doped three ions with blue, green, and red emissions, respectively. The steady-state and transient fluorescence spectra of singly- and doubly-doped double perovskites reveal the existence of multiple energy transfer channels in the triply-doped phosphors, including from Sb 3+ to Tb 3+ , Sb 3+ to Sm 3+ , and Tb 3+ to Sm 3+ . Benefiting from these channels, the color coordinates of the triply-doped phosphors can cross the whole white light area of the CIE chromaticity diagram by adjusting the ratios of the three dopants , and the maximum internal quantum yield of the white light phosphors is 66.61 %. The white emission phosphors show the characteristic of being independent of excitation wavelength within 310–360 nm. Furthermore, the emission intensity at 430 K of the white light phosphor Cs 2 NaInCl 6 : 0.01Sb 3+ , 0.65Tb 3+ , 0.20Sm 3+ remains 50 % of that at room temperature. A WLED device fabricated with the phosphor and a 365 nm LED chip exhibits a high color rendering index of 90.9, correlated color temperature of 5469 K, and CIE coordinates of (0.333 and 0.328). The results indicate that the as-prepared double perovskite materials are promising candidates in the solid-state lighting field.
研究领域:
材料科学
·
光学
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.6
Xiangyan Yun,Zexiang Liu,Baoxia Liu,Renping Cao,Jingheng Nie
The broadband emission and long lifetimes of self-trapped excitons (STEs) have garnered significant interest. However, in highly symmetric all-inorganic halides, STEs behavior has traditionally been explained exclusively through Jahn–Teller distortions. Herein, we report an anomalous dual-STEs emission in Sb 3+ -doped Cs 2 CdCl 4 with a layered Ruddlesden–Popper phase. At room temperature, Cs 2 CdCl 4 :Sb 3+ exhibits a single green emission band centered at 514 nm, while an additional red-shifted emission band at 586 nm emerges at low temperatures (80–220 K). Integrated analysis combining temperature-dependent spectroscopy, time-resolved dynamics, and density functional theory (DFT) calculations reveals that the 514 nm band arises from Jahn–Teller distortion within the [SbCl 6 ] 3− octahedra, while the 586 nm band is stabilized by strong dipole–dipole coupling between the STEs dipole moment and localized polar environments created during solution synthesis. This work provides direct experimental and theoretical evidence that local polarity perturbations can regulate STEs emission even in highly symmetric all-inorganic halides. Furthermore, the Cs 2 CdCl 4 :Sb 3+ powders and their Cs 2 CdCl 4 :Sb 3+ @PDMS films exhibit excellent stability and device applicability, demonstrating promising potential for solid-state lighting and flexible optoelectronic applications.
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PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Xiaofang Cao,Mingkai He,Baopeng Ma,Shixuan Liu,Xiaohui Pang,Mingzhen Song,Fudong Zhang,Xiaolian Chao,Zupei Yang,Di Wu
The band degeneracy thus thermoelectric performance of (Fe, Co)Sb 3 based p -type skutterudites can be well modulated by adjusting Co/Fe ratio. Combining systematic experiments and density function theory (DFT) calculations, we revealed in this work that the variation of Co/Fe ratio could result in complicated and mutually coupled effects on the individual thermoelectric parameters (band degeneracy, band gap, Fermi level , filling limit of fillers, phonon spectrum, etc.) and that using Co/Fe ratio to improve the overall thermoelectric figure of merit is nontrivial. We eventually found that the optimal Co/Fe ratio for Mm (Misch metal) filled (Fe, Co)Sb 3 lies at 1.3:2.7, which is somewhat off the Co/Fe = 1:3 point where the largest valence band degeneracy appears. Extra Sb was then introduced to compensate Sb volatilization for improved electrical transport performance. An overall peak figure of merit ZT max of 1.06 was eventually achieved in the sample Mm 0.8 Fe 2.7 Co 1.3 Sb 12.60 , which is among the highest ones for all reported (Fe, Co)Sb 3 based p -type skutterudites so far.
研究领域:
材料科学
·
热电学
·
凝聚态物理
·
能源材料
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DOI
高影响因子
PHYSICAL REVIEW B
·
2023
·Vol. 107
·期 21
·214111
·
IF 3.7
Jiaxiang Wang,Yifang Yuan,Cailong Liu,Ruijing Fu,Lingrui Wang,Fei Zhang,Liang Ma,Sheng Jiang,Zhifeng Shi,Haizhong Guo
Zero-dimensional (0D) lead-free halide perovskites doped with ${\mathit{ns}}^{2}$-metal ions have emerged as an interesting research topic, due to their broad luminescence spectra and large Stokes shift for both fundamental research and future optoelectronic applications. Herein, we report an abnormal phenomenon of pressure-induced blue-shifted and enhanced emission in ${\mathrm{Sb}}^{3+}$-doped ${\mathrm{Cs}}_{2}{\mathrm{InBr}}_{5}\ifmmode\cdot\else\textperiodcentered\fi{}{\mathrm{H}}_{2}\mathrm{O}$. The pressure-induced photoluminescence enhancement (0.6 GPa) of ${\mathrm{Sb}}^{3+}$:${\mathrm{Cs}}_{2}{\mathrm{InBr}}_{5}\ifmmode\cdot\else\textperiodcentered\fi{}{\mathrm{H}}_{2}\mathrm{O}$ can be ascribed to the less energy difference between ${}^{3}{P}_{1}$ of ${\mathrm{Sb}}^{3+}$ and self-trapped exciton (STE) state, and the reduced nonradiative energy loss. Meanwhile, the pressure-induced anisotropic contraction of inhomogeneously coordinated [${\mathrm{SbBr}}_{5}\mathrm{O}]{\mathrm{H}}_{2}^{2\ensuremath{-}}$/[${\mathrm{InBr}}_{5}\mathrm{O}]{\mathrm{H}}_{2}^{2\ensuremath{-}}$ octahedra is highly responsible for the unusual blue-shifted STE emission and the variation of the band gap. These findings provide a basis for understanding the structure-properties correlation of ${\mathit{ns}}^{2}$-metal ions doped 0D perovskite, and shed light on the effects of the pressure in emission enhancement and tuning the optical properties of halide perovskites.
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高影响因子
CERAMICS INTERNATIONAL
·
2026
·
IF 6
Wei Xu,Futao Li,Ruichen Xu,Xiaochen Fang,Xiaohui Ruan,Shuru Zhong,Jun Wang,Hai Huang,Cheng Zhang,Biao Zheng
Lead-free double perovskites (DPs) are emerging as sustainable luminescent materials owing to their low-cost synthesis, low toxicity, and superior stability. However, their practical applications are impeded by low luminescence efficiency and a single emission center. To overcome these challenges, we reported a structure-modulation strategy to develop Sb/Er: Cs 2 Na 0 . 95 Ag 0 . 05 YbCl 6 (Sb/Er: CNAYC) DPs by co-doping Cs 2 NaYbCl 6 with Sb 3+ /Er 3+ ions and substituting Na + with Ag + ions. The Sb 3+ /Er 3+ co-doping can introduce multiple emission centers from visible to near-infrared (NIR). Meanwhile, the Na + -Ag + alloying-induced lattice distortion not only enhances the photoluminescence efficiency by breaking the parity-forbidden transitions, but also enables the color of emission to be tuned to the white light range. The Sb/Er: CNAYC DPs simultaneously deliver efficient blue (460 nm@Sb 3+ ), green/red (552/667 nm@ Er 3+ ) and NIR (980/1540 nm@Yb 3+ /Er 3+ ) emissions, providing a promising luminescent material for single-component white/NIR LEDs. Furthermore, the Sb/Er: CNAYC DPs also display pronounced temperature-sensitive fluorescence intensity ratio (FIR) and lifetime characteristics, enabling them well-suited for dual-mode temperature sensing. This study is expected to establish a universal lattice-modulation strategy that yields single-component luminescent materials exhibiting both high-efficiency white/NIR emission and accurate multimode thermometry for next-generation optoelectronic applications.
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高影响因子
Advanced Optical Materials
·
2026
·
IF 7.2
Yujia Peng,Zhimin Yu,Liang Zhao,Yuhang Zhang,Hai Lin
The demand for advanced luminescent perovskites with tunable emission and excellent thermal stability is rapidly growing in secure optical encryption and high-precision temperature sensing. Herein, we develop a multifunctional Cs 2 NaLuCl 6 : Sb 3+ /Ho 3+ /Yb 3+ (CNLC: Sb-Ho-Yb) perovskite that achieves coordinated control of color modulation and thermal robustness. By enabling efficient Sb 3+ →Ho 3+ energy transfer in downshifting (DS) and simultaneously suppressing Ho 3+ nonradiative losses in upconversion (UC), the Sb 3+ -doped strategy significantly enhances both Ho 3+ DS and Ho 3+ -Yb 3+ UC emissions, serving as a foundation for color-coded encryption. The CNLC: Sb-Ho-Yb system further enables dual-mode thermometry by exploiting the contrasting thermal behaviors of its UC (enhanced) and DS (quenched) emissions, allowing for temperature sensing tailored to the specific thermal responses of the respective luminescence mode through two independent fluorescence intensity ratio (FIR) methodologies. Specifically, excitation-wavelength-controlled color switching enables high-security and multi-dimensional optical encryption with strong anti-interference capability, while the high luminescence sensitivity and reversible thermal response ensure high-precision temperature sensing with excellent signal fidelity. Overall, this work establishes a new design paradigm that bridges thermal stability and tunable luminescence in perovskite systems, paving the way toward next-generation intelligent optical encryption and reliable thermal sensing technologies.
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高影响因子
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