A common concern regarding plated contacts to solar cells is the adhesion strength. In this work, laser‐formed anchor points have been applied to Suntech Power's PLUTO passivated emitter and rear cells. Voltages as high as 696 mV have been achieved, showing the ability of a laser‐doped selective emitter at the front surface and localized contacts at the rear when combined with the hydrogenation of defects to reduce the device dark saturation current to well below current norms for commercial passivated emitter and rear cells. The simple hydrogen passivation process applied during sintering appears to facilitate the high voltages by significantly reducing recombination associated with the p‐type Cz wafer and laser‐induced defects formed during laser doping. The same hydrogenation process almost entirely eliminates the damage caused by laser ablation in forming the anchor points. With 50% anchor point coverage (more than necessary for adhesion equivalent to or stronger than screen‐printed contacts), an average V_OC of 693 mV was achieved, with an average current of 40.5 mA/cm², average device efficiency of 20.2%, and a single best cell of 20.5% efficiency. These cells also exhibit excellent contact adhesion and pass all thermal cycling and damp‐heat testing according to IEC 61215.

中文翻译：

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具有锚固镀层和氢化作用的高压p型PERC太阳能电池

关于与太阳能电池的镀覆接触的共同关注点是粘合强度。在这项工作中，激光成型的锚点已应用于尚德电力的PLUTO钝化发射极和后电池。达到了696 mV的电压，显示出当与缺陷氢化结合使用时，在前表面具有激光掺杂的选择性发射极并在后部具有局部接触的能力，从而将器件的暗饱和电流减小到远低于当前的标准商业钝化的发射极和后电池。烧结过程中应用的简单氢钝化工艺通过显着减少与p型Cz晶片相关的复合以及激光掺杂过程中形成的激光诱发的缺陷，似乎可以促进高压。相同的氢化过程几乎完全消除了在形成锚固点时由激光烧蚀引起的损坏。具有50％的锚点覆盖率（对于大于或等于丝网印刷触点的粘附力，其超过所需的平均值）为实现了693 mV的_OC，平均电流为40.5 mA / cm ²，平均器件效率为20.2％，单个最佳电池效率为20.5％。这些电池还具有出色的接触粘合性，并通过了所有热循环和湿热测试（符合IEC 61215）。