烘干炉温度控制的研究与分析

SPL-1200太阳能印刷线中的烘干炉是印刷线中的重要组成部分,而精准的温度控制又是烘干炉的关键之所在。介绍了经典PID控制器的原理以及继电反馈参数自整定原理,设计了温度控制系统并对该参数整定方法给以实验验证,得到了较好的控制效果。     

Baccini Esatto多重丝印技术

Baccini Esatto高精度、多级丝网印刷技术用于应用材料的Baccini后端太阳能电池制造工艺中。这种专门设计的先进的接触形成技术能够实现双重印刷前端金属线和制作选择发射极结构所需的多重工艺流程。首次采用双重印刷金属线的电池效率提高了0．5％,使得太阳能电池制造商能印刷更高、更窄的栅线,     

得可太阳能将在欧洲太阳能光伏展展示突破性太阳能丝网印刷成果

得可太阳能已确认出席第24届欧洲光伏大会暨展览会，展示其最新的突破性光伏太阳能丝网印刷解决方案。展会将于9月21日至25日在德国汉堡举行，展示的重点将包括得可最新推出的PV3000高产量太阳能丝网印刷设备及领先的堆叠式印刷能力。     

太阳能硅片丝印机视觉定位系统

太阳能硅片丝印机是太阳能电池生产行业中的关键设备,如何提高丝印精度、印刷质量和印刷效率成为研究重点,而对位技术则是其中的关键技术之一。介绍了基于机器视觉的精密对位技术在太阳能硅片丝印机中的典型应用,阐述了视觉精密定位系统的基本组成、设计原理及硬件选型,给出了CCD光学系统与UVW工作平台坐标系之间的各运动关系和对位过程。     

宁波太阳能电源向得可增购太阳能电池丝网印刷生产线

<正>宁波太阳能电源有限公司作为优质太阳能电池全球主要供应商,近日从得可太阳能增购了50MW的光伏太阳能电池丝网印刷生产线,增强了     

得可将在欧洲太阳能光伏展展示突破性的正面导线改进方案

得可太阳能将利用今年的欧洲太阳能光伏展，展示标准印刷工艺如何开发以产生明显的能效优势。9月21-25日在德国汉堡举行的展会上，得可的资深工艺开发专家Tom Falcon将发表关于硅太阳能电池正面导线印刷面积比改进的新论文。     

得可在2010 Photon展上呈现先进太阳能技术

<正>得可于2010年4月27日至29日,在斯图加特举办的Photon展会上,展出了最新及成熟的太阳能技术,包括获奖的PVP1200光伏太阳能丝网印刷平台,太阳能烘干技术和全新的混合网版技     

宁波太阳能电源向得可增购太阳能电池丝网印刷生产线

<正>宁波太阳能电源有限公司作为优质太阳能电池全球主要供应商,近日从得可太阳能增购了50MW的光伏太阳能电池丝网印刷生产线,增强了它推动业务发展的能力。     

太阳能电池的金属化技术

在工业生产中，太阳能电池在保证效率的前提下最大限度地降低成本。通过对丝网印刷太阳能电池结构介绍和局限性分析，研究了埋栅太阳能电池用电镀的方法进行产业化的步骤，进而提高太阳能的转化效率。     

选择性电极型晶硅太阳能电池金属栅线印刷位置精度的检测方法

提出一种金属栅线印刷位置的检测方法,适用于直接检测金属栅线印刷位置与选择性重扩散栅线印刷区的重合精度,可以实时在线检测栅线印刷位置精度并反馈偏差值,实现对位印刷的闭环控制。该检测方法同时也为采用图形识别技术和图形对位技术的选择性电极型晶硅太阳能电池丝网印刷设备提供了可直观衡量设备印刷精度的验证方法。此外,利用该检测方法可以实现对网板使用寿命的监测,提高网板和丝网印刷设备的使用率,降低生产成本,简化工艺控制。     

Study of solar cell fabrication using an electrostatic thick-filmprinting method

A novel thick-film circuit printing technique which is based on the electrostatic principle known as noncontact electrostatic thick-film printing was developed for the metallization of edge-defined film-fed growth (EFG) solar cells. The conventional thick-film solar cell inks were modified by adding 10-20% terpineol solvent. The effects of ink viscosity, applied voltages, nozzle diameter, and nozzle-to-substrate distance on line definition and ink-flow rate were investigated. A simple theoretical model was derived for the electrostatic ink ejection. The minimum line width obtained was 3 mm. Multilayer printing was able to be used to raise the line film thickness. The maximum line width obtained was about 20-30 mm for a single run. The system is now completely computercontrolled and capable of printing films onto solar cell substrates reliably, with a high degree of accuracy. Multiple-layer prints can be made with food layer-to-layer registration     

Influence of silver paste rheology and screen parameters on the front side metallization of silicon solar cell

Four commercially available silver pastes for silicon solar cells front side metallization were examined and compared. Both rheological and printing experiments were used to correlate pastes properties and screens characteristics with printing results. Theoretical printability and spreading behavior were first characterized by means of rotational and oscillatory rheological experiments. Further on, the pastes were printed, dried, and fired in a standard solar cell process on an industrial line using a full factorial design of experiments. This methodology allows to study the effect of the paste, the screen, the aperture, and their interactions on the printing results. Especially, the finger aspect ratio, the finger cross section and its relative standard deviation, which are respectively linked to solar cell efficiency, silver consumption, and process stability, were systematically measured. This work allows finding general guidelines for process optimization. Finally, a confirmation test was carried out, leading to 19% efficiency on monocrystalline silicon solar cells in an industrial environment.     

硅片在丝印线上的传输与搬运方法

介绍了太阳能电池片的生产工艺流程,描述了在太阳能电池片丝印线上硅片的几种自动传输与搬运方法,剖析了吸盘、带及特制的机械手三种传送方式的优缺点及其应用场合,并进一步阐述了特制机械手的基本结构与性能。     

Application of ink jet technology on photovoltaic metallization

Computer-controlled ink-jet assisted metallization of the grid pattern of solar cells with metallo-organic decomposition (MOD) silver inks offers a maskless alternative method to conventional photolithographic thin-film technology and screen-printing technology. This method can provide low-cost, fine-resolution reduction in process complexity by direct ink-jet patterning, avoidance of degradation of p-n junctions by firing at low temperature (350°C), and uniform line film on rough-surface solar cells (unpolished solar cells for low-cost purposes). The metallization process involves jet-printed metallo-organic inks, belt furnace firing, and thermal spiking. With titanium thin-film underlayer as an adhesion promoter and multilayer ink jet printing, solar cells of 8.08% average efficiency without AR coating can be obtained. This efficiency value is approximately equal to that of thin-film metallized solar cells of the same lot     

背接触太阳电池的背面设计优化

利用quokka3仿真软件建立三维模型,对n型叉指背接触(IBC)单晶硅太阳电池的单元电池结构设计和栅线参数进行了仿真优化,并通过激光和丝网印刷进行了实验验证.实验结果表明,在不同IBC单元电池结构设计下,当p+发射区与n+背表面场区的宽度比值为4时,IBC太阳电池效率比宽度比值为2.3时的高0.11％.可通过减小单元...     

Metal aerosol jet printing for solar cell metallization

Metal aerosol jet printing is a new non‐contact direct‐write technique for the front side metallization of highly efficient industrial silicon solar cells. With this technique the first layer of a two‐layer contact structure is created. It features a low contact resistance and good mechanical adhesion to the silicon surface. The second layer is formed by light‐induced silver plating (LIP) to increase the line conductivity. To form the first layer a metal‐containing aerosol is created in the printer and focused via a second surrounding gas stream through a nozzle and deposited onto the substrate. The focussing gas avoids the contact between the aerosol and the nozzle tip. In addition, line widths significantly smaller than the outlet diameter of the nozzle tip can be reached. Fine and continuous lines with a width of 14 µm were printed using a metal organic ink. As the adhesion of these layers was not sufficient, a commercially available screen‐printing paste for solar cell metallization was modified and tested. Monocrystalline silicon solar cells of 12·5 cm × 12·5 cm with an aluminum back surface field were processed, achieving energy conversion efficiencies up to 17·8%. Copyright © 2007 John Wiley & Sons, Ltd.     

有机太阳能电池结构研究进展

有机太阳能电池因具有成本低、质轻、柔韧性好、可大面积印刷制备的优点而受到广泛关注,对电池结构进行优化可以改善有机太阳能电池的性能。综述了有机太阳能电池结构优化的最近研究进展,包括单层Schottky电池、双层异质结电池、本体混合异质结电池、叠层电池和p-i-n电池,讨论了有机太阳能电池的发展趋势和应用前景。     

Combining laser chemical processing and aerosol jet printing: a laboratory scale feasibility study

First results showing the viability of combining laser chemical processing (LCP) and aerosol jet printing (AJP) technologies to produce a high‐efficiency front side for silicon solar cells are presented. LCP simultaneously opens the anti‐reflection coating (ARC) and highly dopes the underlying silicon to create a selective emitter, while AJP is the first in a two‐step fine‐line contact formation procedure. The electrical properties as well as the morphology of the resulting structures are presented. Performance similar to that achieved with evaporated TiPdAg metallization is demonstrated. Copyright © 2010 John Wiley & Sons, Ltd.     

Electrical properties of fine line printed and light‐induced plated contacts on silicon solar cells

The properties of fine‐line printed contacts on silicon solar cells, in combination with light‐induced plating (LIP), are presented. The seed layers are printed using an aerosol system and a new metallization ink called SISC developed at Fraunhofer ISE. The influence of multiple layer printing on the contact geometry is studied as well as the influence of the contact height on the line resistivity and on the contact resistance. The dependence between contact resistance and contact height is measured using the transfer length model (TLM). Further on, it is explained by taking SEM images of the metal–semiconductor interface, that a contact height of less than 1 µm or a minimum ink amount of only 4–6 mg is sufficient to contact a large area (15·6 cm × 15·6 cm) silicon solar cell on the front side and results in a contact resistance R_c × W < 0·5 Ω cm. As the line resistivity of fine‐line printed fingers needs to be reduced by LIP, three different plating solutions are tested on solar cells. The observed differences in line resistivity between ρ_f = 5 × 10⁻⁸ and 2 × 10⁻⁸ Ω m are explained by taking SEM pictures of the grown LIP‐silver. Finally, the optimum LIP height for different line resistivities is calculated and experimentally confirmed by processing solar cells with an increasing amount of LIP silver. Copyright © 2010 John Wiley & Sons, Ltd.