ALEXANDRIA, Va., July 3 -- United States Patent no. 12,349,530, issued on July 1, was assigned to Oxford Photovoltaics Ltd. (Yarnton, Great Britain).
"Photovoltaic device" was invented by Ben Williams (Yarnton, Great Britain), Nicola Beaumont (Oxford, Great Britain) and Edward James William Crossland (Oxford, Great Britain).
According to the abstract* released by the U.S. Patent & Trademark Office: "A photovoltaic device comprises a PIN structure in which a p-type hole transporting layer (2) is carried by a substrate (1) and a perovskite layer (3) and an n-type electron transporting layer (4) are arranged in sequence on the p-type layer. A light transmissive electrically conductive layer (9) is provided on top of the n-type electron trans...