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学者姓名：周海芳
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Abstract ：
稀土掺杂的上转换纳米材料在光热传感、生物医学等领域有着广泛的应用前景,但其存在导热性差、测温灵敏度与上转换发光(UCL)强度低的问题,而添加单壁碳纳米管(SWCNT)、贵金属与光子晶体(PCs)是提高其UCL强度与光热性能的有效手段.本文使用溶剂热法合成了NaGdF4∶Er3+/Yb3+/Al3+纳米晶体(UCNPs),通过对比上转换层(UC)、SWCNT/UC、Ag/SWCNT/UC与PCs/Ag/SWCNT/UC的光热性能,研究不同膜层对UCNPs的光热性能影响.结果表明,PCs/Ag/SWCNT/UC具有优异的性能,其红绿光强度分别为UC的3.48倍与4.24倍,其光热转换效率达到33.79%,是UC的1.49倍;并且光学测温绝对灵敏度SA在353 K时达到3.14×10-3 K-1,相对灵敏度SR在273 K时达到1.87×10-2 K-1.本研究为提高光热传感器性能提供了一种有效的策略.
Keyword ：
NaGdF4∶Er3+/Yb3+/Al3+纳米晶 NaGdF4∶Er3+/Yb3+/Al3+纳米晶 光热性能 光热性能 复合薄膜 复合薄膜 测温灵敏度 测温灵敏度
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| GB/T 7714 | 邵泽杰 , 周海芳 , 郑瑞锦 et al. 基于NaGdF4∶Er3+/Yb3+/Al3+的复合薄膜上转换发光与光热性能 [J]. | 发光学报 , 2025 , 46 (1) : 89-97 . |
| MLA | 邵泽杰 et al. "基于NaGdF4∶Er3+/Yb3+/Al3+的复合薄膜上转换发光与光热性能" . | 发光学报 46 . 1 (2025) : 89-97 . |
| APA | 邵泽杰 , 周海芳 , 郑瑞锦 , 程树英 . 基于NaGdF4∶Er3+/Yb3+/Al3+的复合薄膜上转换发光与光热性能 . | 发光学报 , 2025 , 46 (1) , 89-97 . |
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Antimony sulfide (Sb2S3) photodetectors (PDs) possess extensive application prospects. Efficient carrier transport of a PD significantly affects the detectivity and response speed. Herein, we propose an all-inorganic self-powered Sb2S3 PD based on vertical TiO2 nanorods (NRs). The spray-coated 15-nm TiO2 thin film as a seed layer ensures the growth of compact vertical TiO2 nanorod arrays by the hydrothermal method. One-dimensional TiO2 nanorods facilitate photocarrier separation and transport to enhance device performance. Ultimately, the Sb2S3 PD achieves a responsivity of 0.29 A/W, a specific detectivity of 3.37 x 1012 Jones, and a response time of 7.8 mu s, showing great potential in commercial applications. (c) 2024 Optica Publishing Group. All rights, including for text and data mining (TDM), Artificial Intelligence (AI) training, and similar technologies, are reserved.
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| GB/T 7714 | Kang, Yubin , Deng, Hui , Wu, Kefei et al. Self-powered Sb2S3 photodetectors with efficient carrier transport enabled by compact vertical TiO2 nanorods [J]. | OPTICS LETTERS , 2024 , 49 (22) : 6533-6536 . |
| MLA | Kang, Yubin et al. "Self-powered Sb2S3 photodetectors with efficient carrier transport enabled by compact vertical TiO2 nanorods" . | OPTICS LETTERS 49 . 22 (2024) : 6533-6536 . |
| APA | Kang, Yubin , Deng, Hui , Wu, Kefei , Wang, Guidong , Hong, Jinwei , Wang, Weihuang et al. Self-powered Sb2S3 photodetectors with efficient carrier transport enabled by compact vertical TiO2 nanorods . | OPTICS LETTERS , 2024 , 49 (22) , 6533-6536 . |
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以乙二胺四乙酸（EDTA）和油酸（OA）为络合剂进行对比，利用溶剂热法制备出结晶度高、发光性能强的小尺寸六方相NaGdF_4:Er~(3+)/Yb~(3+)/Al~(3+)纳米晶。研究发现，OA比EDTA具有更强的络合能力和表面修饰作用，更容易制备出发光性能强的小尺寸纳米晶，当OA体积为17 mL时纳米晶具有最强的发光强度。氟源提供过量的F~-可以减少吸附在纳米晶表面的OH~-以降低能量共振损耗，进而提高了上转换纳米晶的发光性能，为生物医学成像方面提供了很好的应用。
Keyword ：
NaGdF_4纳米晶 NaGdF_4纳米晶 上转换发光 上转换发光 制备条件 制备条件 稀土 稀土
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| GB/T 7714 | 邹家欣 , 周海芳 . NaGdF_4纳米晶的制备条件对发光性能的影响 [J]. | 科技与创新 , 2024 , 5 (02) : 56-59,62 . |
| MLA | 邹家欣 et al. "NaGdF_4纳米晶的制备条件对发光性能的影响" . | 科技与创新 5 . 02 (2024) : 56-59,62 . |
| APA | 邹家欣 , 周海芳 . NaGdF_4纳米晶的制备条件对发光性能的影响 . | 科技与创新 , 2024 , 5 (02) , 56-59,62 . |
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Lanthanide-doped upconversion nanoparticles (UCNPs)have potential applications in optical and optoelectronic devices due to their novel optical properties. The surface plasmon is an effective method in improving the upconversion luminescence (UCL) properties, and it is essential to tunee the distance between the metal NPs and UCNPs for improving UCL. In this work, the Ag/TiO2/NaGdF4:Er3+/Yb3+/Al3+ composite films were fabricated, and the effect of the TiO2 layer thickness on spectral characteristics in the composite films was investigated. It is shown that the thickness of TiO2 film has a significant effect on the Ag NPs plasma resonance and fluorescence intensity. The maximum upconversion emission enhancement factors of the red and green emission were obtained for the sample with 15-nm-thickness TiO2 under the 980 nm excitation. That is mainly originated from the enhancement of the resonate energy transfer (Yb3+→Er3+) rate under the competition between non-radiative transition and local field effects. © 2022 Informa UK Limited, trading as Taylor & Francis Group.
Keyword ：
Ag/TiO2/NaGdF4:Er3+/Yb3+/Al3+ composite films Ag/TiO2/NaGdF4:Er3+/Yb3+/Al3+ composite films energy transfer energy transfer plasma resonance plasma resonance Upconversion fluorescence enhancement Upconversion fluorescence enhancement
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| GB/T 7714 | Zheng, P. , Chen, M. , Zhou, H. et al. Influence of TiO2 Space layer on plasmon enhanced Luminescence of Ag/TiO2/NaGdF4:Er3+/Yb3+/Al3+ composite Films [J]. | Materials Research Innovations , 2023 , 27 (5) : 289-295 . |
| MLA | Zheng, P. et al. "Influence of TiO2 Space layer on plasmon enhanced Luminescence of Ag/TiO2/NaGdF4:Er3+/Yb3+/Al3+ composite Films" . | Materials Research Innovations 27 . 5 (2023) : 289-295 . |
| APA | Zheng, P. , Chen, M. , Zhou, H. , Wang, C. , Lai, Y. , Yu, J. et al. Influence of TiO2 Space layer on plasmon enhanced Luminescence of Ag/TiO2/NaGdF4:Er3+/Yb3+/Al3+ composite Films . | Materials Research Innovations , 2023 , 27 (5) , 289-295 . |
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Surface plasmon resonance and photonic crystals (PCs) effect are effective methods for improving upconversion luminescence (UCL) for upconversion nanoparticles. In this work, PCs/Ag/Al2O3/UC hybrid structure is pre-sented to enhance UCL of NaGdF4:Er3+/Yb3+/Al3+ nanorods through tuning the thickness of the Al2O3 layer. The optical and luminescence properties were studied and compared with those of UC and PCs/Ag/UC hybrid, it is shown that the thickness of Al2O3 layer has a significant effect on fluorescence intensity, outstanding upcon-version luminescence enhancement and the green-to-red intensity ratios have been achieved at 980 nm excita-tion. The maximum enhancement factors of the red and green emission were obtained for the sample with 10 nm Al2O3 layer, respectively. The mechanism of UCL enhancement for PCs/Ag/Al2O3/UC hybrid structure was discussed.
Keyword ：
Ag Ag Dielectric confinement Dielectric confinement Energy transfer Energy transfer Local field enhancement Local field enhancement PCs PCs UC hybrid UC hybrid Upconversion enhancement Upconversion enhancement
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| GB/T 7714 | Zhou, Haifang , Zou, Jiaxin , Weng, Xuehua et al. Upconversion luminescence enhancement of NaGdF4:Er3+/Yb3+/Al3+nanorods through tuning Al2O3 layer in a hybrid photonic-plasmonic-dielectric structure [J]. | OPTICAL MATERIALS , 2023 , 137 . |
| MLA | Zhou, Haifang et al. "Upconversion luminescence enhancement of NaGdF4:Er3+/Yb3+/Al3+nanorods through tuning Al2O3 layer in a hybrid photonic-plasmonic-dielectric structure" . | OPTICAL MATERIALS 137 (2023) . |
| APA | Zhou, Haifang , Zou, Jiaxin , Weng, Xuehua , Lai, Yunfeng , Yu, Jinling . Upconversion luminescence enhancement of NaGdF4:Er3+/Yb3+/Al3+nanorods through tuning Al2O3 layer in a hybrid photonic-plasmonic-dielectric structure . | OPTICAL MATERIALS , 2023 , 137 . |
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Abstract ：
本发明涉及一种双局域场协同增强上转换发光的复合薄膜，包括衬底、光子晶体层、贵金属层、介质层和上转换发光层。所述复合薄膜的制备方法，先用溶剂热法制备NaGdF4 : Yb3+/Er3+/Al3+纳米晶，接着在衬底上制备光子晶体层，然后在光子晶体层上制备贵金属层，再在贵金属层上制备介质层，最后将上转换发光NaGdF4纳米晶旋涂于介质层上制得上转换发光层。该复合薄膜及其制备方法有利于提高上转换发光性能，且制备简单。
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| GB/T 7714 | 周海芳 , 翁雪花 , 赖云锋 et al. 双局域场协同增强上转换发光的复合薄膜及其制备方法 : CN202111634076.6[P]. | 2021-12-29 00:00:00 . |
| MLA | 周海芳 et al. "双局域场协同增强上转换发光的复合薄膜及其制备方法" : CN202111634076.6. | 2021-12-29 00:00:00 . |
| APA | 周海芳 , 翁雪花 , 赖云锋 , 程树英 . 双局域场协同增强上转换发光的复合薄膜及其制备方法 : CN202111634076.6. | 2021-12-29 00:00:00 . |
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为快速检测并定位光伏阵列中出现的故障，提出一种新的传感器布局策略，通过优化电压传感器的位置减少电压传感器的数量，同时显化故障的特征.然后，将定位问题转化为分类问题，选用极限学习机(ELM),将最大功率点处的电压数据作为输入训练分类模型.结合实验室屋顶光伏并网发电平台获取的故障数据，对健康状态和所设置的3种故障状态下细化的故障共18种类别，进行分类模型的建立与测试.实验表明，应用本模型故障检测与区域定位的精确率达99.52%,优于所对比的支持向量机、多层感知机网络和随机森林的诊断结果.
Keyword ：
传感器布局 传感器布局 光伏阵列 光伏阵列 故障定位 故障定位 故障检测 故障检测 极限学习机 极限学习机
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| GB/T 7714 | 王涛 , 林培杰 , 周海芳 et al. 采用ELM和优化电压传感器布局的光伏阵列故障检测与区域定位 [J]. | 福州大学学报(自然科学版) , 2022 , 50 (04) : 475-482 . |
| MLA | 王涛 et al. "采用ELM和优化电压传感器布局的光伏阵列故障检测与区域定位" . | 福州大学学报(自然科学版) 50 . 04 (2022) : 475-482 . |
| APA | 王涛 , 林培杰 , 周海芳 , 程树英 , 陈志聪 , 吴丽君 . 采用ELM和优化电压传感器布局的光伏阵列故障检测与区域定位 . | 福州大学学报(自然科学版) , 2022 , 50 (04) , 475-482 . |
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Noble metal surface plasmon resonance or photonic crystals (PCs) effect is a novel and effective method for improving upconversion luminescence (UCL). UCL can be effected by the size, thickness of the noble metal film and the photonic band gap (PBG) of the PCs. So it is important to improve UCL by coupling surface plasmons resonance (SPR) with PCs effect. In this work, the PCs/Ag/UC composite films were fabricated to improve the upconversion emission of NaGdF4:Er3+/Yb3+/Al3+ nanocrystals, and the influence of the Ag layer thickness on spectral properties was investigated. Studies reveal that the Ag layer thickness and morphology have a major impact on the Ag nanoparticles (NPs) plasma resonance and UCL intensity of NaGdF4:Er3+/Yb3+/Al3+ nanocrystals for PCs/Ag/UC composite films. The highest enhancement factors of the red and green emissions were found to be 43 and 42 under 980 nm excitation, respectively. That is attributed to the coupling effect of the Ag NPs local SPR and PCs Bragg reflection, the local electromagnetic field enhancement produced by the excitation wavelength overlapping with the photonic band gap and strong plasmon resonance band overlapping with emission wavelength.
Keyword ：
Local electromagnetic field enhancement Local electromagnetic field enhancement NaGdF4:Er3+/Yb3+/Al3+ nanocrystals NaGdF4:Er3+/Yb3+/Al3+ nanocrystals PCs/Ag/UC composite films PCs/Ag/UC composite films Upconversion enhancement Upconversion enhancement
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| GB/T 7714 | Zhou, Haifang , Weng, Xuehua , Zou, Jiaxin et al. Upconversion luminescence enhancement of the composite films by coupling local surface plasmon effect and photonic crystals effect [J]. | APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING , 2022 , 128 (5) . |
| MLA | Zhou, Haifang et al. "Upconversion luminescence enhancement of the composite films by coupling local surface plasmon effect and photonic crystals effect" . | APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING 128 . 5 (2022) . |
| APA | Zhou, Haifang , Weng, Xuehua , Zou, Jiaxin , Lai, Yunfeng , Yu, Jinling , Cheng, Shuying . Upconversion luminescence enhancement of the composite films by coupling local surface plasmon effect and photonic crystals effect . | APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING , 2022 , 128 (5) . |
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采用溶剂热法,以乙二胺四乙酸(EDTA)为络合剂合成粗细均匀、六棱柱形的六方相Al~(3+)掺杂NaGdF_4:Er~(3+)/Yb~(3+)纳米棒,并研究了掺杂Al~(3+)离子的上转换纳米材料性能.结果表明,适量Al~(3+)掺杂对NaGdF_4的晶相没有产生影响,但使主衍射峰的位置发生偏移.在980 nm激光激发下,与未掺杂的纳米晶相比,当Al~(3+)的掺杂浓度为15%时,红绿光发光最大强度分别增强了5.7倍和5倍,且~4F_(9/2)能级的荧光寿命被延长. Al~(3+)掺杂对上转换发光的改善是因Er~(3+)附近局部对称性的降低和粒子表面吸附基团的减少所致.
Keyword ：
Al~(3+)掺杂 Al~(3+)掺杂 NaGdF_4:Er~(3+)/Yb~(3+)纳米晶 NaGdF_4:Er~(3+)/Yb~(3+)纳米晶 上转换发光 上转换发光 溶剂热法 溶剂热法
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| GB/T 7714 | 王春霞 , 周海芳 , 赖云锋 et al. Al~(3+)掺杂增强NaGdF_4:Er~(3+)/Yb~(3+)纳米晶的上转换发光 [J]. | 福州大学学报(自然科学版) , 2022 , 50 (01) : 61-66 . |
| MLA | 王春霞 et al. "Al~(3+)掺杂增强NaGdF_4:Er~(3+)/Yb~(3+)纳米晶的上转换发光" . | 福州大学学报(自然科学版) 50 . 01 (2022) : 61-66 . |
| APA | 王春霞 , 周海芳 , 赖云锋 , 俞金玲 , 程树英 . Al~(3+)掺杂增强NaGdF_4:Er~(3+)/Yb~(3+)纳米晶的上转换发光 . | 福州大学学报(自然科学版) , 2022 , 50 (01) , 61-66 . |
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The buffer layer plays a critical role in high-performance flexible Cu2ZnSn(S,Se)(4) (CZTSSe) solar cell. The conventional CdS buffer layer causes the photoelectric performance loss and the pollution of toxic Cd. Herein, the ultrathin CdS and Zn0.8Sn0.2O (ZTO) buffer layer engineering is proposed to reduce interface recombination and Cd content. An ultrathin CdS layer acts as the interface passivation layer to protect the CZTSSe layer and passivate its surface defects. To solve the problems of decreased carrier collection capacity caused by thinning the CdS layer, the ZTO layer with low resistivity and high carrier concentration is obtained by doping Sn into the ZnO layer. The systematic study indicates that the ultrathin CdS and ZTO buffer layers-based solar cells realize high-quality interface and band matching. Ultimately, 9.3% efficiency of the ultrathin CdS and ZTO-based solar cell with 448 mV open-circuit voltage is obtained, which is higher than that of the standard CdS buffer layer-based device (8.5% with 419 mV). The study provides a new idea for achieving efficient flexible CZTSSe solar cells through heterojunction interface management.
Keyword ：
flexible CZTSSe solar cells flexible CZTSSe solar cells heterojunction interfaces heterojunction interfaces ultrathin CdS ultrathin CdS ZTO ZTO
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| GB/T 7714 | Lin, Beibei , Sun, Quanzhen , Zhang, Caixia et al. 9.3% Efficient Flexible Cu2ZnSn(S,Se)(4) Solar Cells with High-Quality Interfaces via Ultrathin CdS and Zn0.8Sn0.2O Buffer Layers [J]. | ENERGY TECHNOLOGY , 2022 , 10 (10) . |
| MLA | Lin, Beibei et al. "9.3% Efficient Flexible Cu2ZnSn(S,Se)(4) Solar Cells with High-Quality Interfaces via Ultrathin CdS and Zn0.8Sn0.2O Buffer Layers" . | ENERGY TECHNOLOGY 10 . 10 (2022) . |
| APA | Lin, Beibei , Sun, Quanzhen , Zhang, Caixia , Deng, Hui , Xie, Weihao , Tang, Jianlong et al. 9.3% Efficient Flexible Cu2ZnSn(S,Se)(4) Solar Cells with High-Quality Interfaces via Ultrathin CdS and Zn0.8Sn0.2O Buffer Layers . | ENERGY TECHNOLOGY , 2022 , 10 (10) . |
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