Mitigation of Crack Formation During Thermo-Mechanical Delamination of CdTe Solar Cells

D. McGott, C. Wolden, M. Reese
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Abstract

Controlled thermo-mechanical delamination of thin-film solar cells offers a promising approach to drastically improve flexibility and specific power (power-to-weight ratio). However, the issue of film cracking during the delamination process must first be addressed. Here, we examine the causes of cracking during and after delamination, where it is found that cracking is heavily influenced by the material properties of the stressor layer used to induce delamination and the glass substrate that the solar cell is grown on. We then present several ways to reduce cracking during the delamination process.
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CdTe太阳能电池热-机械分层过程中裂纹形成的减缓
薄膜太阳能电池的受控热机械分层提供了一种有前途的方法,可以大幅提高灵活性和比功率(功率重量比)。然而,在分层过程中,薄膜开裂的问题必须首先解决。在这里,我们研究了在分层期间和分层后开裂的原因,发现开裂在很大程度上受到用于诱导分层的应力源层和太阳能电池生长的玻璃基板的材料特性的影响。然后,我们提出了几种方法来减少开裂在分层过程中。
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