2010 35th IEEE Photovoltaic Specialists Conference最新文献

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Ultrasonically sprayed Zinc sulfide buffer layers for Cu(In,Ga)(S,Se)2 solar cells 超声喷涂Cu(In,Ga)(S,Se)2太阳能电池硫化锌缓冲层
2010 35th IEEE Photovoltaic Specialists Conference Pub Date : 2010-06-20 DOI: 10.1109/PVSC.2010.5614155
C. Fella, S. Buecheler, D. Guettler, J. Perrenoud, A. Uhl, A. Tiwari
{"title":"Ultrasonically sprayed Zinc sulfide buffer layers for Cu(In,Ga)(S,Se)2 solar cells","authors":"C. Fella, S. Buecheler, D. Guettler, J. Perrenoud, A. Uhl, A. Tiwari","doi":"10.1109/PVSC.2010.5614155","DOIUrl":"https://doi.org/10.1109/PVSC.2010.5614155","url":null,"abstract":"Zinc sulfide (ZnS) buffer layer deposited by an ultrasonic spray pyrolysis (USP) method is a feasible alternative to the chemical bath deposited cadmium sulfide (CdS) buffer layer. In the present work we report the results of a low-cost, non-vacuum and in-line compatible method to grow ZnS thin films. We investigated the properties of USP-ZnS films grown at different substrate temperatures and spray solution precursors. Rutherford backscattering spectrometry measurements were done for quantitative chemical composition information, revealing chlorine impurities depending on the deposition temperature as well as on the chemical precursors. By optimizing the spray parameters of USP-ZnS buffer layers on Cu(In,Ga)(S,Se)2 absorbers, a maximum solar cell efficiency of 10.8% after air-annealing was achieved, whilst the CdS reference fabricated on a similar absorber reached 11.4%. A significant increase of the short circuit current is observed as compared to the CdS reference due to a gain in the blue wavelength region.","PeriodicalId":6424,"journal":{"name":"2010 35th IEEE Photovoltaic Specialists Conference","volume":"1 1","pages":"003394-003397"},"PeriodicalIF":0.0,"publicationDate":"2010-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82328825","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
Preparation of β-Cu (In,Ga)3Se5 thin films for wide band gap absorber for top cell in CIGS tandem structure CIGS串联结构顶层电池宽禁带吸收膜β-Cu (In,Ga)3Se5薄膜的制备
2010 35th IEEE Photovoltaic Specialists Conference Pub Date : 2010-06-20 DOI: 10.1109/PVSC.2010.5614624
J. Kim, Y. Shin, B. Ahn
{"title":"Preparation of β-Cu (In,Ga)3Se5 thin films for wide band gap absorber for top cell in CIGS tandem structure","authors":"J. Kim, Y. Shin, B. Ahn","doi":"10.1109/PVSC.2010.5614624","DOIUrl":"https://doi.org/10.1109/PVSC.2010.5614624","url":null,"abstract":"Polycrystalline Cu<inf>x</inf>(In,Ga)<inf>y</inf>Se<inf>z</inf> films were deposited on Mo coated soda-lime glass substrate by three-stage co-evaporation process. Cu content x can be controlled by deposition times of each stage. The presence of β-Cu(In,Ga)<inf>3</inf>Se<inf>5</inf> phase in films was confirmed by X-ray Diffraction and Auger Electron Spectroscopy when the x decreased below 0.5. The grain size became smaller as the x decreased. The absorption edge moved to shorter wavelength and the optical transmittance of long wavelength noticeably increased in β-Cu(In,Ga)<inf>3</inf>Se<inf>5</inf> system comparing the conventional Cu(In,Ga)Se<inf>2</inf>. Its optical band gap was 1.49eV. The CdS/Cu(In<inf>0.3</inf>Ga<inf>0.7</inf>)<inf>3</inf>Se<inf>5</inf> solar cell showed the efficiency of 8.09% with an active area of 0.44cm<sup>2</sup>. High transmittance and band gap are desirable to be a light absorber for top cell, but further effort is necessary to improve cell efficiency for the top cell application in CIGS tandem solar cells.","PeriodicalId":6424,"journal":{"name":"2010 35th IEEE Photovoltaic Specialists Conference","volume":"144 1","pages":"003439-003442"},"PeriodicalIF":0.0,"publicationDate":"2010-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78680040","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
Towards 19% efficient industrial PERC devices using simultaneous front emitter and rear surface passivation by thermal oxidation 朝向19%效率的工业PERC装置,同时采用前发射极和后表面热氧化钝化
2010 35th IEEE Photovoltaic Specialists Conference Pub Date : 2010-06-20 DOI: 10.1109/PVSC.2010.5614048
S. Mack, U. Jager, Gero Kastner, E. A. Wotke, U. Belledin, A. Wolf, R. Preu, D. Biro
{"title":"Towards 19% efficient industrial PERC devices using simultaneous front emitter and rear surface passivation by thermal oxidation","authors":"S. Mack, U. Jager, Gero Kastner, E. A. Wotke, U. Belledin, A. Wolf, R. Preu, D. Biro","doi":"10.1109/PVSC.2010.5614048","DOIUrl":"https://doi.org/10.1109/PVSC.2010.5614048","url":null,"abstract":"Higher solar cell efficiencies enable a reduction of the cost per watt ratio, if production effort is maintained at an acceptable level. A proven high-efficiency concept is the passivated emitter and rear cell (PERC) [1]. However, the transfer of this solar cell structure from demonstrator level to industrial application is challenging. We present a simple approach for the industrial fabrication of PERC solar cells which utilizes the simultaneous passivation of the front emitter and the rear surface by a thin layer of thermally grown oxide. This Thermal Oxide Passivated All Sides (TOPAS) structure represents an industrially feasible implementation of the PERC concept.","PeriodicalId":6424,"journal":{"name":"2010 35th IEEE Photovoltaic Specialists Conference","volume":"46 1","pages":"000034-000038"},"PeriodicalIF":0.0,"publicationDate":"2010-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87007906","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: 39
HW-CVD deposited μc-Si:H for the inverted heterojunction solar cell HW-CVD沉积了反向异质结太阳能电池的μc-Si:H
2010 35th IEEE Photovoltaic Specialists Conference Pub Date : 2010-06-20 DOI: 10.1109/PVSC.2010.5614432
Y. Matsumoto, M. Ortega, V. Sanchez, F. Wunsch, J. Urbano
{"title":"HW-CVD deposited μc-Si:H for the inverted heterojunction solar cell","authors":"Y. Matsumoto, M. Ortega, V. Sanchez, F. Wunsch, J. Urbano","doi":"10.1109/PVSC.2010.5614432","DOIUrl":"https://doi.org/10.1109/PVSC.2010.5614432","url":null,"abstract":"P-type-microcrystalline-silicon / n-type-crystalline-silicon hetero-junction solar cell has been prepared by means of hot-wire chemical vapor deposition (HW-CVD) technique. The solar cell structure was illuminated on the opposite side of the normally-formed heterojunction. With this inverted structure, the photovoltaic cell has the design potential to improve the light-incident surface-texturing with the possibility to avoid the use of transparent conducting oxide (TCO). Solar cells were fabricated on Czochralsky (CZ)-grown phosphorous-doped crystalline-silicon (c-Si) substrates within 0.5 to 1 ohm-cm. HW-CVD has employed for the deposition of a very thin intrinsic hydrogenated amorphous silicon (i-a-Si) as a buffer-layer as a heterojunction interface, and boron-doped hydrogenated microcrystalline silicon (p-μc-Si) on c-Si substrate. The tungsten catalyst temperature (Tfil) was settled to 1600 °C and 1950 °C for i-a-Si and p-μc-Si films, respectively. Silane (SiH4), hydrogen (H2) and diluted diborane (B2H6) gases were used for p-μc-Si at the substrate temperatures (Tsub) of 200 °C. The obtained I–V characteristics under simulated solar radiation at 100mW/cm2 are: Jsc =26.1 mA/cm2; Voc = 545 mV; Jm = 21.4 mA/cm2; Vm = 410 mV; FF = 61.7%, with total area efficiency of η= 8.8%. The solar cell has great potential to improve its conversion efficiency with proper surface passivation and antireflection coat.","PeriodicalId":6424,"journal":{"name":"2010 35th IEEE Photovoltaic Specialists Conference","volume":"72 1","pages":"001450-001455"},"PeriodicalIF":0.0,"publicationDate":"2010-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88226656","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
Long-term performance of the first grid-connected, building-integrated amorphous silicon PV installation in Brazil 巴西首个并网、建筑一体化非晶硅光伏装置的长期性能
2010 35th IEEE Photovoltaic Specialists Conference Pub Date : 2010-06-20 DOI: 10.1109/PVSC.2010.5617021
R. Ruther, L. Nascimento, J. Urbanetz Junior, P. Pfitscher, T. Viana
{"title":"Long-term performance of the first grid-connected, building-integrated amorphous silicon PV installation in Brazil","authors":"R. Ruther, L. Nascimento, J. Urbanetz Junior, P. Pfitscher, T. Viana","doi":"10.1109/PVSC.2010.5617021","DOIUrl":"https://doi.org/10.1109/PVSC.2010.5617021","url":null,"abstract":"In this paper we present the performance assessment of the first grid-connected, building-integrated, thin-film PV system installed in Brazil in 1997. In the 12-years period since start up, the 40m2, 2kWp double-junction amorphous silicon BIPV generator operated continuously, with minimum downtime and high performance ratios. We also discuss reliability issues related to system design and inverter performance and replacement for the continuous operation of this distributed energy source in the urban environment of a warm-climate metropolitan state capital in Brazil.","PeriodicalId":6424,"journal":{"name":"2010 35th IEEE Photovoltaic Specialists Conference","volume":"154 1","pages":"002283-002286"},"PeriodicalIF":0.0,"publicationDate":"2010-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86214619","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: 9
Decoupling charge carrier collection and metallization geometry of back-contacted back-junction silicon solar cells by using insulating thin films 利用绝缘薄膜对背接触背结硅太阳能电池的电荷载流子收集和金属化几何进行解耦
2010 35th IEEE Photovoltaic Specialists Conference Pub Date : 2010-06-20 DOI: 10.1109/PVSC.2010.5614640
C. Reichel, M. Reusch, F. Granek, M. Hermle, S. W.
{"title":"Decoupling charge carrier collection and metallization geometry of back-contacted back-junction silicon solar cells by using insulating thin films","authors":"C. Reichel, M. Reusch, F. Granek, M. Hermle, S. W.","doi":"10.1109/PVSC.2010.5614640","DOIUrl":"https://doi.org/10.1109/PVSC.2010.5614640","url":null,"abstract":"Back-contacted back-junction silicon solar cells with a large emitter coverage (point-like base contacts) and a small emitter coverage (point-like emitter and base contacts) have been fabricated and analyzed. These solar cells feature an insulating thin film on the rear side in order to decouple the charge carrier collection geometry and the geometry of the metallization. It has been found, that for the investigated solar cells an increased collection efficiency is observed due to a significant reduction of electrical shading losses. Thus, high short-circuit currents could be achieved for both solar cell structures. Different insulating thin films, such as ALD Al2O3 and PECVD SiOx have been investigated. It has been found that ALD layers are already insulating for a thinner film thickness. By applying these insulating thin films to the investigated solar cell structures no significant shunts are introduced. For solar cells on 1 Ωcm n-type material and with a large emitter coverage an efficiency of 21.9% (Voc = 673 mV, Jsc = 40.6 mA/cm2, FF = 80.1%) could be obtained and for solar cells with a small emitter coverage an efficiency of 22.7% (Voc = 706 mV, Jsc = 41.0 mA/cm2, FF = 78.5%) has been achieved.","PeriodicalId":6424,"journal":{"name":"2010 35th IEEE Photovoltaic Specialists Conference","volume":"41 1","pages":"001034-001038"},"PeriodicalIF":0.0,"publicationDate":"2010-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83875792","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: 22
Role of exciton blocking layers as optical spacer in CuPc/C60 based organic solar cells 激子阻挡层在CuPc/C60基有机太阳能电池中的光学间隔层作用
2010 35th IEEE Photovoltaic Specialists Conference Pub Date : 2010-06-20 DOI: 10.1109/PVSC.2010.5616793
D. Datta, S. Sundar Kumar Iyer, Satyendra Kumar
{"title":"Role of exciton blocking layers as optical spacer in CuPc/C60 based organic solar cells","authors":"D. Datta, S. Sundar Kumar Iyer, Satyendra Kumar","doi":"10.1109/PVSC.2010.5616793","DOIUrl":"https://doi.org/10.1109/PVSC.2010.5616793","url":null,"abstract":"The role of exciton blocking layer (EBL) in organic solar cells have been under intense investigation in the recent past. Although BCP (bathocuproine) has been commonly used as an EBL in CuPc/C60 based devices, its role as an effective optical spacer to increase the optical electric field intensity at the active layers, needs further investigation. In this work, using numerical techniques, we study the role of BCP as an optical spacer in CuPc/C60 based devices. For comparison, a higher refractive index material (TiOx; titanium suboxide) was also used. The optical constants of the BCP layer was extracted using spectroscopic ellipsometry using Tauc-Lorentz model dielectric function. The maximum device photocurrent density (Jsc-max) was simulated using transfer matrix formalism and exciton diffusion dynamics. The results with BCP as an optical spacer indicate that although a high gain in photocurrent can be obtained for devices with low active layer thicknesses, the enhancement in photocurrent from an already optimized device can at best be from 93.7 A/m2 to 98.7 A/m2, corresponding to a gain of only 5.3 %. Using a higher refractive index material such as TiOx, the current density for an already optimized device can at best be enhanced from 93.7 A/m2 to 97.5 A/m2, a gain of only 4 %. Overall, our results reveal that although the EBL acts as an optical spacer, the improvement in device absorption due to the optical effect is limited for an already optimized device. This indicates that the well known improvement in device performance by incorporating the buffer layer should be primarily related to other properties such as exciton blocking, electron transport, and avoiding acceptor damage during cathode deposition.","PeriodicalId":6424,"journal":{"name":"2010 35th IEEE Photovoltaic Specialists Conference","volume":"94 1","pages":"000508-000512"},"PeriodicalIF":0.0,"publicationDate":"2010-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83912071","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
Alternative approaches for low temperature front surface passivation of interdigitated back contact silicon heterojunction solar cell 交叉后接触硅异质结太阳能电池低温前表面钝化的几种方法
2010 35th IEEE Photovoltaic Specialists Conference Pub Date : 2010-06-20 DOI: 10.1109/PVSC.2010.5616755
B. Shu, U. Das, J. Appel, B. McCandless, S. Hegedus, R. Birkmire
{"title":"Alternative approaches for low temperature front surface passivation of interdigitated back contact silicon heterojunction solar cell","authors":"B. Shu, U. Das, J. Appel, B. McCandless, S. Hegedus, R. Birkmire","doi":"10.1109/PVSC.2010.5616755","DOIUrl":"https://doi.org/10.1109/PVSC.2010.5616755","url":null,"abstract":"In this work, we investigated two alternative approaches for the front surface passivation of interdigitated back contact silicon heterojunction (IBC-SHJ) solar cells: (1) with plasma enhanced chemical vapor deposited (PEVCD) a-Si-based stack structure consisting of a-Si:H/a-SiNx:H/a-SiC:H, and (2) with physical vapor deposited (PVD) zinc sulfide (ZnS) film. The processing temperatures for both the approaches are under 300°C. Effective surface recombination velocities (SRV) of < 6.2cm/s and < 35cm/s are obtained with stack structure and ZnS respectively on n-type float zone (FZ) crystalline silicon (c-Si) wafers. The anti-reflection (AR) properties of these two passivation approaches are studied and the optimization procedure of the stack structure was discussed and shown to improve the photo-generated current. The IBC-SHJ solar cells were fabricated using both the front surface passivation approaches and a 15% cell efficiency was achieved on 150µm thick FZ c-Si wafer without surface texturing and optical optimization.","PeriodicalId":6424,"journal":{"name":"2010 35th IEEE Photovoltaic Specialists Conference","volume":"47 1","pages":"003223-003228"},"PeriodicalIF":0.0,"publicationDate":"2010-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82855153","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: 20
Micro-optic solar concentration and next-generation prototypes 微光学太阳能聚光和下一代原型
2010 35th IEEE Photovoltaic Specialists Conference Pub Date : 2010-06-20 DOI: 10.1109/PVSC.2010.5616788
J. Karp, E. Tremblay, J. Ford
{"title":"Micro-optic solar concentration and next-generation prototypes","authors":"J. Karp, E. Tremblay, J. Ford","doi":"10.1109/PVSC.2010.5616788","DOIUrl":"https://doi.org/10.1109/PVSC.2010.5616788","url":null,"abstract":"We recently proposed a micro-optic solar concentrator using a two-dimensional array of small-aperture lenses focusing into a planar slab waveguide. By placing mirrors at each lens focus, light collected by the lens array reflects into a common slab waveguide at angles which guide by total internal reflection. Coupled sunlight propagates within the slab until reaching a photovoltaic cell mounted along the edge(s). Simulations of this geometry reveal designs with 89% and 81.9% optical efficiency at 100x and 300x geometric concentrations respectively. The micro-optic concentrator was previously fabricated as a proof-of-concept, but exhibited poor performance due to lens aberrations. Here, we present a 2nd-generation system using a better-suited lens array and achieve >52% measured efficiency. We also discuss performance tradeoffs associated with micro-optic concentration and explore secondary coupler designs as a means to increase both efficiency and concentration.","PeriodicalId":6424,"journal":{"name":"2010 35th IEEE Photovoltaic Specialists Conference","volume":"102 1","pages":"000493-000497"},"PeriodicalIF":0.0,"publicationDate":"2010-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82965417","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: 9
The effect of CdTe deposition temperature on device properties of different TCOs and glass substrates CdTe沉积温度对不同tco和玻璃基板器件性能的影响
2010 35th IEEE Photovoltaic Specialists Conference Pub Date : 2010-06-20 DOI: 10.1109/PVSC.2010.5616929
R. Dhere, M. Bonnet-eymard, Emilie Charlet, E. Peter, J. Duenow, H. Moutinho, Jian V. Li, M. Scott, D. Albin, T. Gessert
{"title":"The effect of CdTe deposition temperature on device properties of different TCOs and glass substrates","authors":"R. Dhere, M. Bonnet-eymard, Emilie Charlet, E. Peter, J. Duenow, H. Moutinho, Jian V. Li, M. Scott, D. Albin, T. Gessert","doi":"10.1109/PVSC.2010.5616929","DOIUrl":"https://doi.org/10.1109/PVSC.2010.5616929","url":null,"abstract":"In this paper, we present our work on devices fabricated using CdTe films deposited by close-spaced sublimation using substrate temperatures in the range of 450° to 620° C. We studied devices prepared on Saint-Gobain soda lime SGG Diamant and Corning 7059 borosilicate glass substrates. We used four types of contact: SnO2:F, ITO, CTO, and Saint-Gobain AZO with and without high-resistivity buffer layers. We used a variety of buffer layers: undoped SnO2, zinc tin oxide (ZTO), and proprietary Saint-Gobain buffer layers. A buffer layer is crucial for devices using CTO and AZO as the front contact. For AZO layers developed by Saint-Gobain, we achieved 9% efficiency without a buffer layer and over 12% efficiency using buffer layers when CdTe films are deposited below 500° C. We used standard current density-voltage and quantum efficiency analysis to determine the device parameters.","PeriodicalId":6424,"journal":{"name":"2010 35th IEEE Photovoltaic Specialists Conference","volume":"90 1","pages":"000340-000344"},"PeriodicalIF":0.0,"publicationDate":"2010-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88986192","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
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