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Quantum dot sensitized solar cells 量子点敏化太阳能电池
2008 2nd IEEE International Nanoelectronics Conference Pub Date : 2008-03-24 DOI: 10.1109/INEC.2008.4585460
Y. Tachibana, H. Y. Akiyama, K. Umekita, Y. Otsuka, T. Torimoto, S. Kuwabata
{"title":"Quantum dot sensitized solar cells","authors":"Y. Tachibana, H. Y. Akiyama, K. Umekita, Y. Otsuka, T. Torimoto, S. Kuwabata","doi":"10.1109/INEC.2008.4585460","DOIUrl":"https://doi.org/10.1109/INEC.2008.4585460","url":null,"abstract":"Metal sulfide (CdS or PbS) quantum dots were synthesized in nanoporous TiO2 films for applications in solar energy conversion devices. Several electrolytes were investigated for the functioning redox activity in sandwich type regenerative solar cells, based on the quantum dots sensitized TiO2 film. A high IPCE was attained by optimizing the polysulfide electrolyte composition. The CdS QD shows a higher IPCE, compared to PbS, related to an increased light harvesting efficiency when the number and size of the QDs intensified. In contrast, QD size dependence on the IPCE was observed for the PbS, likely resulting from the conduction band edge potential shift (associated with quantum size effect) relative to the TiO2 conduction band edge, or the kinetic competition between the hot electron injection and the electron relaxation in the PbS conduction band. We also propose that an I3 -/I- redox electrolyte, with NaSCN addition, can be employed to enhance the solar cell performance. SCN- ions may attach to the QD surface forming a shell type structure to prevent the photocorrosion reaction, and act as an intermediate electronic state to induce the sequential step electron transfer reactions for the QD re-reduction.","PeriodicalId":245696,"journal":{"name":"2008 2nd IEEE International Nanoelectronics Conference","volume":"252 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115617376","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 149
The exposure process study of 100KV JBX-6300LS electron-beam nanolithograph system 100KV JBX-6300LS电子束纳米光刻系统曝光过程研究
2008 2nd IEEE International Nanoelectronics Conference Pub Date : 2008-03-24 DOI: 10.1109/INEC.2008.4585685
Qunqing Li, Lihui Zhang, Mo Chen, S. Fan
{"title":"The exposure process study of 100KV JBX-6300LS electron-beam nanolithograph system","authors":"Qunqing Li, Lihui Zhang, Mo Chen, S. Fan","doi":"10.1109/INEC.2008.4585685","DOIUrl":"https://doi.org/10.1109/INEC.2008.4585685","url":null,"abstract":"We report on a series results of the performance of a Jeol model JBX-6300LS electron-beam nanolithography system operating at 100 KV. The exposure conditions are optimized to fabricate dense lines with 1:1 L/S and with the line-widths down to 30 nm for resist ZEP520A and PMMA. The lines show a very good uniformity within an area as large as 2 mmtimes2 mm. We obtained isolated metal lines with 22 nm widths through lift-off process based on 170 nm thick PMMA. Exposure studies were also performed for double layer resists to get a good under-cut cross section profile.","PeriodicalId":245696,"journal":{"name":"2008 2nd IEEE International Nanoelectronics Conference","volume":"107 1-2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116639461","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A study on the image processing of nano scale using wavelet 基于小波变换的纳米尺度图像处理研究
2008 2nd IEEE International Nanoelectronics Conference Pub Date : 2008-03-24 DOI: 10.1109/INEC.2008.4585601
Wu Xiang, Wang Shu-xian, Liu Jin-gao
{"title":"A study on the image processing of nano scale using wavelet","authors":"Wu Xiang, Wang Shu-xian, Liu Jin-gao","doi":"10.1109/INEC.2008.4585601","DOIUrl":"https://doi.org/10.1109/INEC.2008.4585601","url":null,"abstract":"Nanotechnology has been implemented efficiently to analyze and understand the properties of matter at atomic and molecular level. The nanoindenter allows users to characterize the mechanical properties of materials on nanometer length scales. This work describes a novel algorithm to process image from nanoindenter. By noise reduction, enhancement and extraction of object, more accurate data can be acquired from nanoindenter. The image processing algorithm mainly based on wavelet.","PeriodicalId":245696,"journal":{"name":"2008 2nd IEEE International Nanoelectronics Conference","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116927214","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Conductivity of screen-printed carbon nanotube composite film and its sensitivity to organic gas 丝网印刷碳纳米管复合薄膜的电导率及其对有机气体的敏感性
2008 2nd IEEE International Nanoelectronics Conference Pub Date : 2008-03-24 DOI: 10.1109/INEC.2008.4585479
J.B. Liu, Jun Chen, L. Zhu, J. She, S. Deng, N. Xu
{"title":"Conductivity of screen-printed carbon nanotube composite film and its sensitivity to organic gas","authors":"J.B. Liu, Jun Chen, L. Zhu, J. She, S. Deng, N. Xu","doi":"10.1109/INEC.2008.4585479","DOIUrl":"https://doi.org/10.1109/INEC.2008.4585479","url":null,"abstract":"A screen-printed nanocomposite film has been prepared which is composed of multi-wall carbon nanotubes and silicon dioxide binder. The conductivity of the film was studied at various organic ambiences, including acetone, ethanol, formaldehyde and methanol. It is found that the conductivity of the film decreases when the film is exposed to organic gases. The results indicate that the CNT nanocomposite film may find applications in low-cost gas sensor.","PeriodicalId":245696,"journal":{"name":"2008 2nd IEEE International Nanoelectronics Conference","volume":"114 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120942330","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Effects of different annealing treatments on soft magnetic properties of Finemet alloy 不同退火处理对Finemet合金软磁性能的影响
2008 2nd IEEE International Nanoelectronics Conference Pub Date : 2008-03-24 DOI: 10.1109/INEC.2008.4585527
L. Long, B. Yan, Leding Guan, S. Yang, Z. Chen
{"title":"Effects of different annealing treatments on soft magnetic properties of Finemet alloy","authors":"L. Long, B. Yan, Leding Guan, S. Yang, Z. Chen","doi":"10.1109/INEC.2008.4585527","DOIUrl":"https://doi.org/10.1109/INEC.2008.4585527","url":null,"abstract":"Amorphous ribbon of Finemet alloy was obtained by rapid quenching from the melt spinning technique. Normal heat treatment and longitudinal magnetic field heat treatment methods were applied to anneal the Finemet amorphous ribbon. Microstructures of the annealed ribbons were detected by XRD. XRD results showed that nanocrystalline alpha-Fe(Si) phase formed in the amorphous matrix after both annealing treatments, resulting in the nanocrystalline / amorphous two-phase structure. Soft magnetic properties of the annealed ribbons were tested by TPS-200SA Soft Exchange Tester. It was found that soft magnetic properties were greatly improved by both annealing treatment methods, especially after the longitudinal magnetic field heat treatment, the hysteresis loop was transformed to near-rectangle shape, with the magnetic permeability mu greatly improved.","PeriodicalId":245696,"journal":{"name":"2008 2nd IEEE International Nanoelectronics Conference","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127172013","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Raman and morphological characteristics of carbon nanotubes depending on substrate temperatures by chemical vapor deposition 化学气相沉积碳纳米管的拉曼和形态特征随衬底温度的变化
2008 2nd IEEE International Nanoelectronics Conference Pub Date : 2008-03-24 DOI: 10.1109/INEC.2008.4585484
P. Guo, Z. Sun, T. Chen, M. Xu, Z. Zheng, Y. Sun
{"title":"Raman and morphological characteristics of carbon nanotubes depending on substrate temperatures by chemical vapor deposition","authors":"P. Guo, Z. Sun, T. Chen, M. Xu, Z. Zheng, Y. Sun","doi":"10.1109/INEC.2008.4585484","DOIUrl":"https://doi.org/10.1109/INEC.2008.4585484","url":null,"abstract":"Carbon nanotubes (CNTs) films were synthesized at low pressure using nickel as catalyst by thermal chemical vapor deposition with hydrogen-acetylene mixture. The Raman characteristics and morphological features of CNTs at different substrate temperatures were investigated. The variation of CNTs morphological feature mainly depends on the substrate temperatures. In the low temperature range (450-550degC), the film consists of graphite particles and CNTs mixture with some amorphous phase. With increase the temperature (550-650degC), the tube content increases, and the tube diameter decreases. At high temperature range (700-800degC), the film consists of CNTs and nanoparticles mixture. Raman spectroscopy results show that the intensity ratio ID/IG of the G- and D-band has a maximum at the medium temperature of 600degC, and the width of G band becomes narrow with the substrate temperature. The growth behaviors of CNTs at different temperatures are discussed based on the experimental results.","PeriodicalId":245696,"journal":{"name":"2008 2nd IEEE International Nanoelectronics Conference","volume":"227 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123246228","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
In-situ TEM electrical and mechanical properties measurements of one-dimensional inorganic nanomaterials 一维无机纳米材料的原位TEM电学和力学性能测量
2008 2nd IEEE International Nanoelectronics Conference Pub Date : 2008-03-24 DOI: 10.1109/INEC.2008.4585680
D. Golberg, P. Costa, M. Mitome, Y. Bando
{"title":"In-situ TEM electrical and mechanical properties measurements of one-dimensional inorganic nanomaterials","authors":"D. Golberg, P. Costa, M. Mitome, Y. Bando","doi":"10.1109/INEC.2008.4585680","DOIUrl":"https://doi.org/10.1109/INEC.2008.4585680","url":null,"abstract":"The unique possibilities of Current-Voltage (I-V) and Force-Displacement (F-D) curve recordings from individual 1D-nanostructures inside high-resolution transmission electron microscopes are demonstrated. The examples include Ga-filled MgO, In-filled SiO2 and pure multi-walled BN nanotubes.","PeriodicalId":245696,"journal":{"name":"2008 2nd IEEE International Nanoelectronics Conference","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123453241","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
The size effects of the magnetic properties for the 200-nm Co nanorings: Monte Carlo simulation 200nm钴纳米环磁性能的尺寸效应:蒙特卡罗模拟
2008 2nd IEEE International Nanoelectronics Conference Pub Date : 2008-03-24 DOI: 10.1109/INEC.2008.4585576
Zhiqin Lin, Kehua Zhong, Q. Ye, Zhigao Chen, Zhigao Huang
{"title":"The size effects of the magnetic properties for the 200-nm Co nanorings: Monte Carlo simulation","authors":"Zhiqin Lin, Kehua Zhong, Q. Ye, Zhigao Chen, Zhigao Huang","doi":"10.1109/INEC.2008.4585576","DOIUrl":"https://doi.org/10.1109/INEC.2008.4585576","url":null,"abstract":"In this work, using Monte Carlo simulation, we study the magnetic properties of individual Co nanorings with the outer diameter of 200 nm, the thickness of 10 nm, 20 nm, 30 nm and the varying width from 10 nm to 90 nm, obtaining various spin configurations. The simulated results indicate that, there exist evident size effects on the magnetic states and magnetization processes of the nanorings; in the magnetization reversal process there exist the onion-type state for the narrow rings, and the vortex-type state and onion-type state for the wide rings, respectively. The vortex-type spin configuration is responded for the step of hysteresis loops, which is named as the second stable state. At the same time, it is found that the stability of the second stable state has evident size effect. Moreover, the simulated results are consistent with experimental facts.","PeriodicalId":245696,"journal":{"name":"2008 2nd IEEE International Nanoelectronics Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125566754","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Preparation of nano-structured InGaAs thin film by molecular beam epitaxy 分子束外延法制备纳米结构InGaAs薄膜
2008 2nd IEEE International Nanoelectronics Conference Pub Date : 2008-03-24 DOI: 10.1109/INEC.2008.4585516
Yanping Yao, Chunling Liu, Z. Qiao, Mei Li, Xin Gao, B. Bo
{"title":"Preparation of nano-structured InGaAs thin film by molecular beam epitaxy","authors":"Yanping Yao, Chunling Liu, Z. Qiao, Mei Li, Xin Gao, B. Bo","doi":"10.1109/INEC.2008.4585516","DOIUrl":"https://doi.org/10.1109/INEC.2008.4585516","url":null,"abstract":"The nano-structured InGaAs films have been prepared by molecular beam epitaxy at different substrate temperature. The substrate temperature was varied from 400degC to 20degC. The samples were characterized by X-ray diffraction and absorption spectra. The results show that the grain size of InGaAs films and the bandgap width increase with increasing substrate temperature. The as-deposited nano-structured InGaAs films have been passivated using hydrogen plasma. The influence of hydrogenation on these InGaAs films has been studied by Fourier transform infrared absorption spectroscopy. These data show the presence of various hydrogen bondings in InGaAs samples prepared at 200degC and 20degC. And the effect of the post hydrogen passivation increases the dark resistivity and photo sensitivity. These results demonstrate the post hydrogen passivation reduces the defects in the films and improves properties of nano-structured InGaAs film.","PeriodicalId":245696,"journal":{"name":"2008 2nd IEEE International Nanoelectronics Conference","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116415292","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Synthesis and characterization of NaYF4: Yb, Er nanoparticles with efficient up-conversion fluorescence based on new type solar cells 新型太阳能电池高效上转换荧光纳米粒子NaYF4: Yb, Er的合成与表征
2008 2nd IEEE International Nanoelectronics Conference Pub Date : 2008-03-24 DOI: 10.1109/INEC.2008.4585426
X. Zhang, X. Jin, Z. Lei, N. Cai, S. Xiong, Y. Zhao
{"title":"Synthesis and characterization of NaYF4: Yb, Er nanoparticles with efficient up-conversion fluorescence based on new type solar cells","authors":"X. Zhang, X. Jin, Z. Lei, N. Cai, S. Xiong, Y. Zhao","doi":"10.1109/INEC.2008.4585426","DOIUrl":"https://doi.org/10.1109/INEC.2008.4585426","url":null,"abstract":"An up-converting material, which can be efficiently excited by near infrared light and emit strong visible light through a process termed dasiaup-conversion fluorescencepsila, has shown great potential for use in silicon thin films solar cells. This kind of material when placed on the rear side of p-i-n type silicon thin films solar cells will increase the overall efficiency of the PV device by utilizing sub-band gap photons that would otherwise be transmitted through the device. Sodium yttrium fluoride (NaYF4) up-converting nanoparticles doped with lanthanide ions have been synthesized. Different lanthanide ions (Yb3+, Er3+) were doped into the nanoparticles, which showed strong up-conversion fluorescence under excitation at 980 nm. Above reason comes from that intensity of the hexagonal nanocrystals in this work is much higher than that of other cubic-phase NaYF4 nanocrystals. In addition, the nanoparticles showed a spherical shape with an average size of about 50 nm.","PeriodicalId":245696,"journal":{"name":"2008 2nd IEEE International Nanoelectronics Conference","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116426588","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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