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学者姓名：张新平
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摘要 ：
<正>由于具有多激励、宽谱响应、插入损耗小和响应速度快等优势, VO_2是一种理想的THz波主动调制材料。但是,由于传统半导体基底存在缺乏柔性、热容大、热导率低和不导电等问题,在硬质基底上难以实现高性能VO_2基THz波主动调制器件。为解决上述问题,申请人将VO2生长在顺排CNT薄膜上。顺排CNT薄膜具有沿CNT轴向有序排列的特性。
关键词 ：
偏振方向 偏振方向 二氧化钒 二氧化钒 THz THz 太赫兹波调制器 太赫兹波调制器
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| GB/T 7714 | 马赫 , 王钰 , 张新平 . 超低激发阈值柔性二氧化钒太赫兹波调制器 [J]. | 量子电子学报 , 2021 , 38 (01) : 123 . |
| MLA | 马赫 等. "超低激发阈值柔性二氧化钒太赫兹波调制器" . | 量子电子学报 38 . 01 (2021) : 123 . |
| APA | 马赫 , 王钰 , 张新平 . 超低激发阈值柔性二氧化钒太赫兹波调制器 . | 量子电子学报 , 2021 , 38 (01) , 123 . |
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摘要 ：
<正>有机太阳能电池中,活性层吸收光子后产生激子,激子扩散到给体、受体界面处实现分离,从而产生载流子,载流子传输到电极处被电极收集后产生光电流。其中激子扩散是有机太阳能电池产生光电流的重要环节,对器件效率有重要影响。本研究以时间分辨荧光光谱作为主要的研究工具,通过三种方法,分别研究了高效率有机太阳能电池给体和受体材料中的激子扩散过程。其中激子表面淬灭法是在交联的富勒烯材料和石英衬底上分别制备相同厚度的有机半导体给体薄膜,通过测量在不同衬底上的荧光寿命,得出由激子扩散导致的荧光淬灭,从而计算出激子的扩散长度。
关键词 ：
有机太阳能电池 有机太阳能电池 光谱学研究 光谱学研究 扩散长度 扩散长度
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| GB/T 7714 | 张一伟 , 张新平 . 高效有机太阳能电池中激子扩散超快光谱学研究 [J]. | 量子电子学报 , 2021 , 38 (01) : 126 . |
| MLA | 张一伟 等. "高效有机太阳能电池中激子扩散超快光谱学研究" . | 量子电子学报 38 . 01 (2021) : 126 . |
| APA | 张一伟 , 张新平 . 高效有机太阳能电池中激子扩散超快光谱学研究 . | 量子电子学报 , 2021 , 38 (01) , 126 . |
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摘要 ：
基于空芯光纤内壁的SERS微腔结构及其激光加工方法，属于属于等离激元纳米光子学和传感器技术领域。提出了一种分布于空芯光纤内壁的三维等离激元纳米结构激光加工方法，工艺过程的自动控制和高效，激光直写加工可以批量制备新型SERS检测基底。空芯光纤SERS基底大大提高SERS检测信号的三维反馈与收集。
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| GB/T 7714 | 张新平 , 穆云云 , 李佳俊 et al. 基于空芯光纤内壁的SERS微腔结构及其激光加工方法 : CN202110045821.7[P]. | 2021-01-13 . |
| MLA | 张新平 et al. "基于空芯光纤内壁的SERS微腔结构及其激光加工方法" : CN202110045821.7. | 2021-01-13 . |
| APA | 张新平 , 穆云云 , 李佳俊 , 刘淼 . 基于空芯光纤内壁的SERS微腔结构及其激光加工方法 : CN202110045821.7. | 2021-01-13 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
We report fabrication of large-scale homogeneous crystallization of CH3NH3PbBr3 (MAPbBr(3)) in the patterned substrate by a two-dimensional (2D) grating. This achieves high-quality optotelectronic structures on local sites in the micron scales and a homogeneous thin-film device in a centimeter scale, proposing a convenient technique to overcome the challenge for producing large-area thin-film devices with high quality by spin-coating. Through matching the concentration of the MAPbBr(3)/DMF solutions with the periods of the patterning structures, we found an optimized size of the patterning channels for a specified solution concentration (e.g., channel width of 5 mu m for a concentration of 0.14 mg/mL). Such a design is also an excellent scheme for random lasing, since the crystalline periodic networks of MAPbBr(3) grids are multi-crystalline constructions, and supply strong light-scattering interfaces. Using the random lasing performance, we can also justify the crystallization qualities and reveal the responsible mechanisms. This is important for the design of large-scale optoelectronic devices based on thin-film hybrid halide perovskites.
关键词 ：
hybrid halide perovskites hybrid halide perovskites large-scale thin-film networks large-scale thin-film networks periodical grids periodical grids random lasing random lasing two-dimensional patterning two-dimensional patterning
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| GB/T 7714 | Hu, Jingyun , Xue, Haibin , Zhang, Xinping . Two-Dimensional Crystalline Gridding Networks of Hybrid Halide Perovskite for Random Lasing [J]. | CRYSTALS , 2021 , 11 (9) . |
| MLA | Hu, Jingyun et al. "Two-Dimensional Crystalline Gridding Networks of Hybrid Halide Perovskite for Random Lasing" . | CRYSTALS 11 . 9 (2021) . |
| APA | Hu, Jingyun , Xue, Haibin , Zhang, Xinping . Two-Dimensional Crystalline Gridding Networks of Hybrid Halide Perovskite for Random Lasing . | CRYSTALS , 2021 , 11 (9) . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
Surface-enhanced Raman scattering (SERS) has been widely used owing to its high sensitivity and rapid response. In particular, 3D SERS-active platforms greatly extend the interaction area and ensure the ability to directly detect trace amounts of molecules in liquids. A silver-coated capillary, with the ability of liquid sampling and light guiding, provides a new platform for high-performance SERS substrates. In this paper, the silver mirror reaction was used for coating silver on the outer wall of the capillary. PDMS was used as a coating material to protect the silver film. Because of the silver coating, Mie scattering and Raman scattering in the liquid channel can be refocused and reflected back which greatly reduces the propagation loss and extends the interaction length. An enhancement factor as high as 10(8) and a detection limit of 10(-10) M of rhodamine 6G in aqueous solution have been achieved. Moreover, the SERS intensity is homogeneous across the end face of the liquid channel, with the relative standard deviation (RSD) value changing within 7%. The large area and high homogeneity greatly reduce the requirement of light coupling precision and liquid injection pressure. Using a common flange optical fiber connector, the capillary can be simply connected and aligned with a multimode fiber with a detection limit of 10(-8) M. The experiment results show great potential for the development of an optofluidic integrated system in the future.
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| GB/T 7714 | Kang, Chen , Sun, Zhoutao , Fang, Xiaohui et al. Molecular trace detection in liquids using refocusing optical feedback by a silver-coated capillary [J]. | NANOSCALE ADVANCES , 2021 . |
| MLA | Kang, Chen et al. "Molecular trace detection in liquids using refocusing optical feedback by a silver-coated capillary" . | NANOSCALE ADVANCES (2021) . |
| APA | Kang, Chen , Sun, Zhoutao , Fang, Xiaohui , Zha, Lei , Han, Yu , Liu, Hongmei et al. Molecular trace detection in liquids using refocusing optical feedback by a silver-coated capillary . | NANOSCALE ADVANCES , 2021 . |
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摘要 ：
Photoelectronic performance of organic-inorganic hybrid perovskites has been investigated extensively. Advancement in optoelectronic characterization and application of this group of materials in solar cells, light-emitting diodes, and lasers has been pushed forward rapidly. However, nonlinear optical properties for applications in optical logic devices have not been exploited. Moreover, long-lived excitons and charges limit the response speed of such materials and further construction of ultrafast devices. In this work, we make use of the high third-order optical nonlinearity of (CH3NH3)PbBr3 single crystals and develop a femtosecond optical switch (OS) based on strong two-photon processes through absorbing one pump and one probe photon. The fascinating band structure, with a steep edge at 2.22 eV between the transmission and strong absorption bands, endows single crystals of (CH3NH3)PbBr3 with perfect characteristics for two-photon optical switching in the near infrared. An on-off ratio of the probe pulses of about 90% and a speed faster than 400 fs have been achieved for this OS device. To the best of our knowledge, such high efficiency has not been realized for an ultrafast OS with any other materials and devices. Moreover, this is a first exploration, to our best knowledge, of the third-order optical nonlinearity of organic-inorganic hybrid halide perovskites for application in ultrafast optical logic devices with high reliability and low threshold in the near infrared. (C) 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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| GB/T 7714 | Zhang, Xinping , Wang, Meng , Ma, Lin et al. Ultrafast two-photon optical switch using single crystal hybrid halide perovskites [J]. | OPTICA , 2021 , 8 (5) : 735-742 . |
| MLA | Zhang, Xinping et al. "Ultrafast two-photon optical switch using single crystal hybrid halide perovskites" . | OPTICA 8 . 5 (2021) : 735-742 . |
| APA | Zhang, Xinping , Wang, Meng , Ma, Lin , Fu, Yulan , Guo, Jinxin , Ma, He et al. Ultrafast two-photon optical switch using single crystal hybrid halide perovskites . | OPTICA , 2021 , 8 (5) , 735-742 . |
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摘要 ：
The robust material tunability of the hybrid organic-inorganic perovskite (HOIP) has attracted considerable research interests to explore the application in photoelectronic devices. Huge hysteresis has been recognised as a main problem in HOIP-based photoelectric devices; the origin of hysteresis has been attributed to the ion migration and trap states in HOIP materials. In this study, we designed and synthesised a HOIP single crystal with one-dimensional structure where the PbI42- octahedron is caged by the organic chains. The ion migration can be dramatically suppressed by the quantum size effect. Besides, in the single crystal trap states density is ultra-low due to the absence of grain boundaries. As a result, photodetectors based on this 1D HOIP single crystal show negligible hysteresis I-V curves. Moreover, a high quality ohmic contact is formed between electrodes and 1D HOIP, which is beneficial for photocarrier extraction. A responsivity of 80 mA W-1 and EQE of 30% are realised. The response speed is determined to be less than 0.4 ms. In addition, the photodetectors based on the novel 1D single crystal present good stability; after 3 months of ambient storage, 85% of its original photocurrent generation ability is retained.
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| GB/T 7714 | Zhang, Yiwei , Liu, Fengjing , Jiang, Chao et al. A perovskite single crystal with one-dimensional structure enables photodetection with negligible hysteresis [J]. | JOURNAL OF MATERIALS CHEMISTRY C , 2021 , 9 (10) : 3470-3476 . |
| MLA | Zhang, Yiwei et al. "A perovskite single crystal with one-dimensional structure enables photodetection with negligible hysteresis" . | JOURNAL OF MATERIALS CHEMISTRY C 9 . 10 (2021) : 3470-3476 . |
| APA | Zhang, Yiwei , Liu, Fengjing , Jiang, Chao , Tang, Fawei , Zhang, Xinping . A perovskite single crystal with one-dimensional structure enables photodetection with negligible hysteresis . | JOURNAL OF MATERIALS CHEMISTRY C , 2021 , 9 (10) , 3470-3476 . |
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摘要 ：
Charge-transfer states have been observed extensively in heterojunctions of organic semiconductors, which are also referred to as exciplexes in polymer blends. Such mechanisms have been well understood in the conventional material systems. However, electromer states may be produced only in some polymeric molecules with folded chains. We report here the interaction between exciplex and electromer states, which facilitates the formation of a new electrically excited state that we define as a secondary exciplex. This is an indirect process understood as an electromer-mediated heterojunction. We discovered such an optoelectronic mechanism in the blend film of poly(9,9'-dioctylfluorene-co-bis-N,N'-(4-butylphenyl)-bis-N,N'-phenyl,4-phenylene-diamine) (PFB) and poly[(9,9-dioctylfluorenyl-2,7-diyl)-alt(benzo[2,1,3]thiadiazol-4,8-diyl)] (F8BT). Four emission bands can be resolved from the electroluminescence spectrum, including those based on the excitons, the electromers, and the primary and secondary exciplexes. The whole electroluminescence spectrum thus extends from the green (500 nm) to the near-infrared (900 nm) with a full bandwidth of 400 nm. These new discoveries with the conventional light-emitting polymers are important not only for polymeric optoelectronics, but also for the development of broadband light-emitting devices.
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| GB/T 7714 | Zhang, Xinping , Yang, Qiaohui , Fu, Yulan et al. Secondary Exciplex by Electromer Mediated Charge Transfer for Multiband Electroluminescence [J]. | ACS MACRO LETTERS , 2021 , 10 (10) : 1236-1242 . |
| MLA | Zhang, Xinping et al. "Secondary Exciplex by Electromer Mediated Charge Transfer for Multiband Electroluminescence" . | ACS MACRO LETTERS 10 . 10 (2021) : 1236-1242 . |
| APA | Zhang, Xinping , Yang, Qiaohui , Fu, Yulan , Zhang, Yiwei . Secondary Exciplex by Electromer Mediated Charge Transfer for Multiband Electroluminescence . | ACS MACRO LETTERS , 2021 , 10 (10) , 1236-1242 . |
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摘要 ：
Plasmonic hollow fibers are fabricated by coating silver-/ gold-alloyed nanoparticles (Ag-Au-ANPs) onto the inner walls of hollow fibers. In this Letter, the Ag-Au-ANPs were synthesized chemically and dissolved in acetone to prepare a colloidal solution, flowed subsequently through the hollow fiber multiple times so that a thin layer of colloidal Ag-Au-ANPs was produced on the inner wall. Annealing at 400C enabled melting/aggregation of the metallic nanoparticles and consequent formation of closely arranged plasmonic nanostructures fixed solidly on the inner wall. A surface-enhanced Raman scattering (SERS) mechanism was thus established for the liquids flowing through the hollows. The SERS measurements show an enhancement factor >104 for such plasmonic hollow fibers in the direct detection of R6G/ethanol solutions. Confinement of the excitation laser energy inside the hollow space represents an additional contribution to the enhancement mechanism. This is a promising design for the direct on-site SERS detection of molecules in flowing liquids with low concentrations. © 2021 Optical Society of America
关键词 ：
Acetone Acetone Fibers Fibers Gold alloys Gold alloys Gold coatings Gold coatings Gold nanoparticles Gold nanoparticles Laser excitation Laser excitation Liquids Liquids Plasmonic nanoparticles Plasmonic nanoparticles Plasmonics Plasmonics Raman scattering Raman scattering Silver alloys Silver alloys Sols Sols Surface scattering Surface scattering
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| GB/T 7714 | Mu, Yunyun , Liu, Miao , Li, Jiajun et al. Plasmonic hollow fibers with distributed inner-wall hotspots for direct SERS detection of flowing liquids [J]. | Optics Letters , 2021 , 46 (6) : 1369-1372 . |
| MLA | Mu, Yunyun et al. "Plasmonic hollow fibers with distributed inner-wall hotspots for direct SERS detection of flowing liquids" . | Optics Letters 46 . 6 (2021) : 1369-1372 . |
| APA | Mu, Yunyun , Liu, Miao , Li, Jiajun , Zhang, Xinping . Plasmonic hollow fibers with distributed inner-wall hotspots for direct SERS detection of flowing liquids . | Optics Letters , 2021 , 46 (6) , 1369-1372 . |
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摘要 ：
CdTe colloidal quantum dots (CQDs) coated with glutathione (GSH) were prepared by aqueous synthesis. Based on the fluorescence selective quenching of CdTe CQDs in the presence of Cu2+, the CdTe CQDs were applied for ultrasensitive Cu2+ sensing. The detection limit of Cu2+ concentration was 0.055 mu M. In order to realize real-time and rapid on-site detection, a capillary sensor composed of CdTe CQDs was prepared, and after drying at room temperature, heating at high temperature, and laser processing, the sensor achieved good response time and detection accuracy results. The detection of 1 x 10(-5) mol/L Cu2+ concentration can be realized in 5-6 s. Moreover, the detection only needs to be carried out under an ultraviolet lamp, the cost of the sensor is low, and the detection method is very simple. The sensor requires only 3 mu L of solution to be tested and can complete the detection, which not only saves the solution to be tested but also greatly improves the limit of the detection environment. A capillary sensor is of great significance for the real-time detection of natural environment and industrial wastewater.
关键词 ：
capillary capillary CdTe CdTe colloidal quantum dots colloidal quantum dots copper ion copper ion real-time rapid detection real-time rapid detection
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| GB/T 7714 | Wang, Jin , Su, XueQiong , Gao, DongWen et al. Capillary Sensors Composed of CdTe Quantum Dots for Real-Time In Situ Detection of Cu2+ [J]. | ACS APPLIED NANO MATERIALS , 2021 , 4 (9) : 8990-8997 . |
| MLA | Wang, Jin et al. "Capillary Sensors Composed of CdTe Quantum Dots for Real-Time In Situ Detection of Cu2+" . | ACS APPLIED NANO MATERIALS 4 . 9 (2021) : 8990-8997 . |
| APA | Wang, Jin , Su, XueQiong , Gao, DongWen , Chen, RuiXiang , Mu, YunYun , Zhang, XinPing et al. Capillary Sensors Composed of CdTe Quantum Dots for Real-Time In Situ Detection of Cu2+ . | ACS APPLIED NANO MATERIALS , 2021 , 4 (9) , 8990-8997 . |
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