本篇論文對矽鍺晶片之多重接面太陽能電池之探討，使用鈀奈米粒子做接合層，以進行退火壓合，使兩晶片完成接合。我們利用團聯式共聚物，均勻塗佈於晶片表面，並令其吸附含鈀溶液，成長鈀奈米粒子，再經氫器/氬氣電漿處理後，獲得高還原度的鈀奈米金屬粒子，其粒徑約60 nm且均勻分散於晶片表面，經計算其表面覆蓋率為27%。在此條件下，與另一片矽晶片接合後，測得接合層之接觸電組約在4 Ωcm2，透光損失約1%，高阻抗與壓合環境和粒子成長有關。

The aim of this study is to develop high efficiency silicon/germanium tandem solar cells. Considering that the silicon cells do not absorb light above 1100 nm, we use a germanium wafer for serialization to compensate for the absorption of the near-infrared solar spectrum.
We use palladium nanoparticle as the bonding layer to complete the bonding of the two silicon wafers. Palladium nanoparticles layer, prepared by a wet process then go for hydrogen and argon gas plasma treatment to remove oxidations and polymer, was used as an adhesive layer to bond two Si wafers. The reduction ratio is 89% for the palladium nanoparticles layer after plasma treatment. A typical palladium nanoparticle layer, with an average particle size of 70 nm and a surface coverage of about 27%, can successfully bond two wafers together resulted in a contact resistance of 4 Ω-cm2.

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