1c-Perovskite/Crystalline Silicon Thin-Film Tandem

Solar-Tectic LLC is pleased to present “1c-Perovskite/Crystalline Silicon Thin-Film Tandem” — a high efficiency solar cell with a non-toxic (Sn, Au, Ge) component replacing lead.

A perovskite/crystalline silicon thin-film tandem solar cell can potentially reach efficiencies up to 45%! 25%–30% is a realistic goal for now.

Update (October 10, 2019):ST is excited to learn that Brown University's Padture group has demonstrated stable perovskite material patented by ST. See their paper and the ST patent with the same material system.

Update (November 17, 2018): Is the perovskite CsAuI stable? A Korean research group thinks so… Korean Researchers Propose New Material for Stable Lead-free Perovskite

Update (September 4, 2018): Solar-Tectic is pleased to announce that another breakthrough perovskite patent has now been issued. See the related news post.

Update (May 29, 2018):Solar-Tectic is very pleased to announce that yet a fourth patent for perovskite solar cells was allowed today by the US Patent Office. US patent application 15/157,539 titled “Methods of growing heteroepitaxial single crystal or large grained semiconductor films and devices thereon” covers every type of perovskite as a top layer in a high efficiency heterojunction solar cell device. Solar-Tectic is one of only two companies in the USA working on perovskite solar cells, and perhaps the only one with issued patents for perovskites.

Update (April 17, 2018): Another patent application for perovskite solar cells was allowed by the US Patent Office today. Please see details under News.

Update (February 5, 2018): The perovskite CsSnI₃ (cesium tin iodide), which is non-toxic, has successfully been grown on our MgO (111) highly textured transparent buffer layer, on soda-lime glass. Now we will move to the tandem fabrication, stability testing, and then solar cell.

Update (March 27, 2017): Tin perovskite thin film tandem solar cell patent granted by the US Patent Office to Solar-Tectic LLC. More info via PRNewswire.

Update (November 3, 2016): A patent for Tin Perovskite/Silicon Thin-Film Tandem Solar Cells has been published. Download the patent.

Update (September 9, 2016): PDF of the Patent Application for Methods of Growing Heteroepitaxial Single Crystal or Large Grained Semiconductor Films and Devices Thereon is now available.

Update (July 31, 2016):Solar-Tectic LLC is pleased to announce that the paper “High efficiency perovskite/crystalline silicon thin-film tandem solar cell from a highly textured MgO[111] buffered glass substrate: a proposal” has been published in the peer reviewed Journal of Energy Challenges and Mechanics. This is the first paper ever published on the topic of a perovskite/crystalline silicon thin film tandem solar cell. Perovskite Paper PDF Download