| TETRASUN, INC. Patent applications |
| Patent application number | Title | Published |
|---|
| 20120060908 | LOCALIZED METAL CONTACTS BY LOCALIZED LASER ASSISTED CONVERSION OF FUNCTIONAL FILMS IN SOLAR CELLS - A solar cell, including contact metallization formed using selective laser irradiation. An upper layer is formed in the solar cell including a material which can be selectively modified to electrical contacts upon laser irradiation. Selective laser irradiation is applied to at least one region of the upper layer to form at least one electrical contact in the layer. A remaining region of the upper layer may be a functional layer of the solar cell which need not be removed. The upper layer may be, e.g., a transparent, conductive film, and anti-reflective film, and/or passivation. The electrical contact may provide an electrically conductive path to at least one region below the upper layer of the solar cell. | 03-15-2012 |
| 20120055547 | HIGH-EFFICIENCY SOLAR CELL STRUCTURES AND METHODS OF MANUFACTURE - Solar cells of varying composition are disclosed, generally including a central substrate, conductive layer(s), antireflection layers(s), passivation layer(s) and/or electrode(s). Multifunctional layers provide combined functions of passivation, transparency, sufficient conductivity for vertical carrier flow, the junction, and/or varying degrees of anti-reflectivity. Improved manufacturing methods including single-side CVD deposition processes and thermal treatment for layer formation and/or conversion are also disclosed. | 03-08-2012 |
| 20120055546 | METHOD FOR FORMING STRUCTURES IN A SOLAR CELL - A conductive contact pattern is formed on a surface of solar cell by forming a thin conductive layer over at least one lower layer of the solar cell, and ablating a majority of the thin conductive layer using a laser beam, thereby leaving behind the conductive contact pattern. The laser has a top-hat profile, enabling precision while scanning and ablating the thin layer across the surface. Heterocontact patterns are also similarly formed. | 03-08-2012 |
| 20110132443 | FINE LINE METALLIZATION OF PHOTOVOLTAIC DEVICES BY PARTIAL LIFT-OFF OF OPTICAL COATINGS - A metal grid contact and dielectric pattern on a layer requiring conductive contact in a photovoltaic device. The invention includes, in one aspect, forming a metal film; forming an etch resist over the metal film by, e.g., directly writing and in-situ curing the etch resist using, e.g., ink-jetting or screen-printing; etching the metal film leaving the resist pattern and a metal grid contact pattern under the etch resist intact; forming a dielectric layer over the etch resist; and removing the resist pattern and the dielectric over the etch resist, leaving a substantially co-planar metal grid contact and dielectric pattern. The metal grid contact pattern may form the front and/or back contact electrode of a solar cell; and the dielectric layer may be an optical reflection or antireflection layer. The layer requiring contact may be multifunctional providing its own passivation, such that passivation is substantially not required in the dielectric layer. | 06-09-2011 |
