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Applications of Parallel Dispensing in PV Metallization

机译:平行分配在光伏金属化中的应用

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摘要

This study provides a summary of latest solar cell results achieved with parallel dispensing equipment that will be commercialized by a Fraunhofer ISE spin-off (HighLine Technology GmbH) within the next year. The goal was to show alternative process routes for the PV back-end, some of them without any laser or screen printing steps involved. On the front surface of conventional PERC solar cells, an efficiency of η_(max) = 21.9% was reached applying 150 parallel dispensed contacts with a finger width of only Wf = 17μm but still excellent contacting behavior. Successful applications of fire through Al pastes were demonstrated on bifacial p-PERC and n-PERT samplings. On the latter, the Voc gap to a dispensed AgAl reference was only AVoc = -1.7mV which shows that a potential replacement of Ag by Al is possible once a better conductivity of Al-FT pastes is achieved. On HJT solar cells, dispensed Ag and AgCu contacts were demonstrated by applying commercial available low temperature screen printing pastes with the former outperforming the screen printed reference by Δη = +0.3%abs reaching η_(max) = 22.2% at a substantial decrease of Ag paste laydown.
机译:本研究提供了通过并行分配设备实现的最新太阳能电池的摘要,该设备将在明年内通过Fraunhofer ISE分拆(Highline Technology GmbH)商业化。目标是为PV后端提供替代过程路线,其中一些没有任何激光或丝网印刷步骤。在传统的PERC太阳能电池的前表面上,达到η_(max)= 21.9%的效率施加150个平行分配的触点,其指宽度仅为WF =17μm但仍然是优异的接触行为。通过Al浆料的成功应用通过Al浆料对Bifacial P-Perc和N-Pert采样进行了证明。在后者上,将POC间隙分配到分配的ARAL参考的AVOC = -1.7mV,表明,一旦达到了更好的AL-FT浆料的导电性,就可以通过AL的潜在更换。在HJT太阳能电池上,通过将商业可用的低温丝网印刷浆料施加前者优于Δη= + 0.3%ABS达到η_(max)= 22.2%,以达到η_(max)= 22.2%的速度显着降低来证明分配的AG和AGCU触点。贴躺下。

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