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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Longteng Wang Carlson, D.E. Gupta, M.C. |
| Copyright Year | 2013 |
| Description | Author affiliation: Charles L. Brown Dept. of Electr. & Comput. Eng., Univ. of Virginia, Charlottesville, VA, USA (Longteng Wang; Gupta, M.C.) || Carlson PV, Williamsburg, VA, USA (Carlson, D.E.) |
| Abstract | This work demonstrates a silicon solar cell fabricated at room temperature by all laser transfer process. The starting p-type silicon had dielectric passivation layers on both sides of the wafer. Instead of the full-area junction on the front, selected line-shaped junctions were formed by the laser transfer process. A phosphorous dopant was laser transferred through the dielectric passivation and antireflection layer followed by metallization using electroplating. The rear contacts were formed by laser transferring of aluminum through the back passivation layer. The room temperature process of laser transfer of dopants replaced the traditional high-temperature drive-in diffusion process. Also, the process of laser transfer of metal contacts was carried out at room temperature without the usage of a high temperature furnace. Initial devices fabricated using the room-temperature all-laser-transfer process without any surface texturing showed current densities as high as 34.5 $mA/cm^{2}.$ Results of quantum efficiency and current mapping are reported. The effects of laser parameters and the variation of junction geometry on device performance were also investigated. This all-room-temperature process shows the potential of the laser transfer process in simplifying the fabrication of silicon solar cells and in reducing the manufacturing cost. |
| Sponsorship | IEEE Electron Devices Soc. |
| Starting Page | 2284 |
| Ending Page | 2287 |
| File Size | 662746 |
| Page Count | 4 |
| File Format | |
| DOI | 10.1109/PVSC.2013.6744933 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2013-06-16 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Surface emitting lasers Silicon Photovoltaic cells Junctions Fabrication Passivation solar cell manufacturing lasers transfer doping metal contacts photovoltaics |
| Content Type | Text |
| Resource Type | Article |
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