CHEMISTRY-A EUROPEAN JOURNAL
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2025
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IF 3.7
Yueyue Wu,Lan Liu,Zifan Li,Jiayi Xie,Zixin Wang,Guo Fang,Keyan Li,Zhenhui Tao,Xin Li,Fei Xiu,Juqing Liu
Graphical With the synergy of Mn 2+ and ODA codecoration, CDs with ultrabroadband and efficient yellow fluorescence in the solid state were synthesized through a simple one-step solvothermal process. These synthetic phosphors exhibit a production yield of 80%, an FWHM of 98 nm, and a solid-state quantum yield up to 62.8%, allowing for high-CRI white LEDs in green and health lighting. Exploiting environment-friendly and efficient phosphors is crucial to constructing high-quality and sustainable white light-emitting devices. Here, we demonstrate a facile and high-yield approach to synthesize Mn 2+ /octadecylamine (ODA)-codecorated carbon dots (CDs) with ultrabroadband and efficient yellow fluorescence in the solid state. The dots are prepared from anhydrous citric acid (CA), 1-ODA, and manganese acetate through a simple one-step hydrothermal process, with a production yield of 80%, a full width at half maxima (FWHM) of 98 nm, and a solid-state quantum yield up to 62.8%. Utilizing the synthetic CDs powder as a phosphor to directly coat on a blue light-emitting chip, the device exhibits warm white emission, with a high color rendering index (CRI) of 88, correlated color temperature (CCT) of 4215 K, and Commission International de l'Éclairage (CIE) coordinates of (0.33, 0.31), endowing great potential applications in green and health lighting.
研究领域:
材料科学
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光学
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纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CRYSTENGCOMM
·
2024
·Vol. 26
·期 45
·6486-6492
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IF 2.6
Qi Wang,Wei Jiang,Peng-Yao Xuan,Ke Zhao,Xiu-Yue Fu,Xiao-Rui Zhang,Xiao-Wu Lei,Cheng-Yang Yue,Xiang-Wen Kong
Lead halide perovskites have multiple optoelectronic functions because of their intriguing photophysical properties. Unfortunately, their extensive application prospects are limited by their high toxicity and instability. For these reasons, it is significant to assemble novel lead-free halides with high-performance luminescence properties. Environment-friendly In3+-based halides are gaining increasing interest because of their high stabilities and photoluminescence quantum yields (PLQYs). In this research work, we synthesized a zero-dimensional (0D) hybrid indium chloride single crystal of [1-Me-Pipz]2[InCl6]Cl·H2O (1-Me-Pipz = protonated 1-methylpiperazine) that demonstrated strong self-trapped exciton (STE)-associated broadband yellow light emission with a sufficient PLQY of 51.58%. Moreover, [1-Me-Pipz]2[InCl6]Cl·H2O exhibits extremely excellent structural and spectral stability in a variety of harsh environments. Importantly, the outstanding optoelectronic characteristics allow indium perovskite to be used for the successful fabrication of white light-emitting diodes (WLEDs) with a high color rendering index of 86.4. This work enriches the literature on indium halide perovskites and provides a novel viewpoint for the possible applications of 0D In3+ perovskite-based luminescent materials.
研究领域:
材料科学
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光电子学
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无机化学
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纳米科技
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固体物理
✓ 已验证
DOI
高影响因子
ECS Journal of Solid State Science and Technology
·
2024
·Vol. 13
·期 3
·036001
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IF 1.8
Gai Yang,Xianke Sun,Honglei Yuan,Weijie Yang
Various types of Eu2+ activated phosphors show potential applications in light emitting diodes. In this work, the Eu2+ activated KGaSi2O6 phosphors were synthesized using high-temperature solid-state reactions. The crystallization and oxidation states, luminescence spectra, decay characteristics, and thermal stability were researched. Depending on excitation of NUV light, the Eu2+ activated KGaSi2O6 phosphors emitted green-yellow light originating from the 4f65d1 → 4f7 transitions of Eu2+. In the light of emission data measured at different temperatures, the activation energy was calculated as 0.33 eV. The warm white light with a correlated color temperature of 3909 K and a color rendering index of 81.9 was emitted by the WLED device consisting of near ultraviolet LED chips, KGaSi2O6:Eu2+ and CaAlSiN3:Eu2+ phosphors.
研究领域:
材料科学
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光学工程
✓ 已验证
产品关联
DOI
高影响因子
CRYSTAL RESEARCH AND TECHNOLOGY
·
2024
·Vol. 59
·期 8
·2400012
·
IF 1.5
Xinxin Chen,Shujun Zhu,Jiali Han,Tao Zhao,Jianguo Pan,Shangke Pan
The low-dimensional organic-inorganic lead halide compound has garnered significant attention in recent times due to its exceptional optoelectronic properties. However, its application in the field of optoelectronics has been hindered by the toxicity of lead. Here, a novel inorganic-organic compound [Epy] 2 [CuBr 3 ] single crystal material with a 0D structure based on Cu(I) is introduced. The single crystal exhibits a broad band yellow luminescence, a significant Stokes shift, and a microsecond-scale photoluminescence (PL) lifetime, which is mainly attributed to the self-trapped excitons (STEs) excitation. In addition, the relevant PL spectra are measured at 78–348 K. The photoluminescence intensity decreases with increasing temperature due to strong electro-phonon coupling. The exciton binding energy E b of the crystal is 76.43 meV, and the Huang-Rhys factor S is 40.55. It is worth noting that the crystal also shows a good response to X-rays. Overall, [Epy] 2 [CuBr 3 ] displays its good potential.
研究领域:
材料科学
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光学
✓ 已验证
产品关联
DOI
高影响因子
SOLID STATE COMMUNICATIONS
·
2017
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IF 1.554
Jingjing Chen,Yang Zhao,Guanghao Li,Zhiyong Mao,Dajian Wang,Lijian Bie
In this paper, facile synthesis of CaAlSiN 3 :Ce 3+ yellow-emitting phosphors under atmospheric pressure at a moderate temperature and their photoluminescent properties are reported. The prepared CaAlSiN 3 :Ce 3+ phosphors exhibit a broad yellow emission band positioned at 580 nm and covering a bandwidth of 150 nm. The thermal stability of CaAlSiN 3 :Ce 3+ phosphors shows obvious superiority than the commercial YAG: Ce 3+ phosphor, indicating its promising application prospect in power LEDs . In addition, the enhancement of red-light component for CaAlSiN 3 :Ce 3+ phosphor is demonstrated by co-doping Eu 2+ ions. This study offers a facile route to prepare CaAlSiN 3 :Ce 3+ yellow-emitting phosphors, which may be used as a promising candidate for high performance white LEDs .
研究领域:
材料科学
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发光材料
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无机化学
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固态照明
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光电功能材料
✓ 已验证
DOI
高影响因子
CRYSTENGCOMM
·
2025
·
IF 2.6
Na Lin,Zhao-Yang Hu,Xin-Yue Zhang,Yu Zhang,Kai-Qi Sun,Xiao-Wu Lei,Zhihong Jing,Zhi-Wei Chen
Recently, low-dimensional organic-inorganic metal halide perovskites acting as white light emitting materials have been widely studied in the field of optoelectronics and solid-state lighting due to their facile preparation and excellent optical characteristics. However, the luminescence efficiency and light stability of white Light-emitting diodes (WLEDs) were hindered by the re-absorption of mixing phosphors due to the difference of light decay. Herein, we reported a new zero-dimensional (0D) cadmium halide of (BAPPz)Cd2Br8·2H2O with [CdX4]2- as optically active center which emits broadband yellow light for the first time and whose PLQY is 13.78%. Significantly, (BAPPz)Cd2Br8·2H2O can be used as a new phosphor for white light-emitting diode doped with a trace of blue commercial phosphor, which achieves a high color rendering index (CRI) of 93.7 and has the correlated color temperature (CCT) close to the domestic standard light source D65 (6500 K). With the driving current of the WLEDs device is increasing from 20 mA to 120 mA, the CRI values consistently maintain a high standard (> 90). This work not only demonstrates a new orientation to fabricate light-emitting diodes with high CRI values but also highlights its potential application in the development of energy-efficient white light-emitting diodes.
研究领域:
材料科学
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光学工程
✓ 已验证
产品关联
DOI
高影响因子
Scientific Reports
·
2024
·Vol. 14
·期 1
·1-14
·
IF 3.8
Wang Haiyan,Chen Jin,Sun Yu,Wang Fengchao,Yang Jing,Zhang Canyun,Kong Jinfang,Li Lan
Lead-free halide double perovskite Cs 2 AgInCl 6 has been extensively studied in recent years due to the lead toxicity and poor stability of common lead halide perovskites. In this study, sodium (Na + ) and bismuth (Bi 3+ ) doped into Cs 2 AgInCl 6 double perovskite, then Cs 2 Ag 1− x Na x In 1 − y Bi y Cl 6 films with broadband warm-yellow emissions were achieved by the blade coating method. Herein, Na and Bi content were changed as variables at a series of parameter optimization experiments, respectively. In the Cs 2 Ag 1− x Na x In 1 − y Bi y Cl 6 systems, Na + broke the parity-forbidden transition of Cs 2 AgInCl 6 , and Bi 3+ suppressed non-radiative recombination. The partial replacement of Ag + with Na + ions and doping with Bi 3+ cations were crucial for increasing the intensity of the PL emission. The experimental results showed that the photoluminescence quantum yield of the Cs 2 Ag 0.4 Na 0.6 In 0.8 Bi 0.2 Cl 6 film was 66.38%, which was the highest data among all samples. It demonstrated remarkable stability under heat and ultraviolet conditions. After five thermal cycles, the PL intensity of the Cs 2 Ag 0.4 Na 0.6 In 0.8 Bi 0.2 Cl 6 film is only reduced to approximately 5.7% of the initial value. After 720 h continuous ultraviolet irradiation, there occurred 31.9% emission decay of the film.
研究领域:
材料科学
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光学
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能源技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
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2025
·
IF 2.5
Enyu Zhan,Fengchao Wang,Jun Wang,Yu Sun,Jing Yang,Canyun Zhang,Jinfang Kong,Lan Li,Jin Chen
In recent years, the lead-free halide perovskite has been extensively studied due to the the lead toxicity and poor stability of lead halide perovskite. Cs2AgInCl6 has shown great potential to replace lead halide perovskites in optoelectronic applications. However, this perovskite synthesis method needs to involve high temperature, the synthesis conditions are relatively harsh. In this work, a simple solid-phase grinding method was employed to prepare Na+ and Bi3+ doped perovskite Cs2Ag1-xNaxIn1-yBiyCl6 with systematically characterization of both the structure and optical performance. The experimental results showed that a photoluminescence quantum yield (PLQY) of 13.1% was achieved by breaking the parity-forbidden transition through 4% Bi³⁺ doping. Subsequently, the incorporation of 60% Na⁺ suppressed non-radiative transitions and increased the PLQY to 56.9%. The Cs2Ag0.4Na0.6In0.96Bi0.04Cl6 samples were encapsulated on ultraviolet (UV) LED chips to obtain warm-yellow LED with good performances, which shows that promising applications in the LED field.
研究领域:
材料科学
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光电子学
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纳米技术
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固态化学
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发光二极管（LED）
✓ 已验证
产品关联
DOI
高影响因子
ACS Nano
·
2024
·
IF 15.8
Zhenzhen Weng,Qi Wei,Cheng Ye,Yingying Xu,Jie Gao,Wei Zhang,Lubing Liu,Yue Zhang,Jiangnan Hu,Qin Zhong,Jian Sun,Xiaolei Wang
Fungal infection possesses the characteristics of high invasion depth and easy formation of a biofilm under the skin, which greatly hinders the treatment process. Here, traditional Chinese medicine moxa is carbonized and modified with zinc oxide (ZnO) nanosheets to synthesize carbonized moxa@ZnO (CMZ) with the dual response properties of yellow light (YL) and ultrasound (US) for synergistic antifungal therapy. CMZ with narrow bandgap can respond to long-wavelength YL that is highly safe and helpful for skin repair. Simultaneously, CMZ with a piezoelectric effect can further enhance the photocatalytic efficiency under the stimulation of US with high tissue penetration. Gene mechanism investigation indicates that when exposed to US and YL irradiation, CMZ-based therapy can adjust the expression of genes associated with fungal virulence, metabolic activity, mycelial growth and biofilm development, thus efficaciously eradicating planktonic Candida albicans (C. albicans) and mature biofilm. Importantly, despite the 1.00 cm thick tissue barrier, CMZ can rapidly eliminate 99.9% of C. albicans within 4 min, showing a satisfactory deep fungicidal efficacy. The in vivo therapeutic effect of this strategy is demonstrated in both open wound and deep cutaneous infection tests, speaking of dramatically better efficacy than the traditional fungicide ketoconazole (KTZ).
研究领域:
纳米技术
·
生物医学工程
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药学
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微生物学
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中医
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Physical Chemistry C
·
2015
·
IF 4.772
Dongya Liu,Fei Qu,Xianen Zhao,Jinmao You
Fluorescent dual-emission carbon nanodots (DECNDs), which contained two different emitters, the blue emitters (λex = 315 nm, λem = 386 nm) and the yellow emitters (λex = 365 nm, λem = 530 nm), were first and simply synthesized by one-step hydrothermal treatment using ascorbic acid (AA) as a carbon source in alcohol–water binary systems. The two emitters could be easily separated through extraction with chloroform. A series of experiments demonstrated that the alcohol–water binary systems played a vital role in synthesis of DECNDs, and the dual emissions were ascribed to two types of carbon nanodots due to the different modified ligands on their surfaces, such as ascorbic acid capped on the blue emitters and alcohol molecules capped on the yellow emitters. By taking advantage of the unique dual-emission characteristic, some new applications were developed. For instance, on the basis of the independent responses of dual emissions to low pH values, the DECNDs could be used as a reliable and accurate pH sensor in acid medium, and both intensity of a single emission and intensity ratios of dual emissions could be employed to construct calibrations for pH measurement. Besides, the obtained DECNDs also exhibited excellent biocompatibility and low cytotoxicity, suggesting great potential for biomedical applications.
研究领域:
纳米技术
·
材料科学
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分析化学
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生物医学工程
✓ 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）