| Autor: |
Tamboli, Adele C., van Hest, Maikel F. A. M., Steiner, Myles A., Essig, Stephanie, Perl, Emmett E., Norman, Andrew G., Bosco, Nick, Stradins, Paul |
| Rok vydání: |
2015 |
| Předmět: |
|
| Druh dokumentu: |
Working Paper |
| Popis: |
We present a method for low temperature plasma-activated direct wafer bonding of III-V materials to Si using a transparent, conductive indium zinc oxide interlayer. The transparent, conductive oxide (TCO) layer provides excellent optical transmission as well as electrical conduction, suggesting suitability for Si/III-V hybrid devices including Si-based tandem solar cells. For bonding temperatures ranging from 100$^{\circ}$C to 350$^{\circ}$C, Ohmic behavior is observed in the sample stacks, with specific contact resistivity below 1 $\Omega$cm$^2$ for samples bonded at 200$^{\circ}$C. Optical absorption measurements show minimal parasitic light absorption, which is limited by the III-V interlayers necessary for Ohmic contact formation to TCOs. These results are promising for Ga$_{0.5}$In$_{0.5}$P/Si tandem solar cells operating at one sun or low concentration conditions. |
| Databáze: |
arXiv |
| Externí odkaz: |
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