Abstract: A solar cell apparatus 100 and a method for forming said solar cell apparatus 100, comprising a substrate 101, a n-type transparent conductive oxide (TCO) layer 102 deposited atop said substrate 101, a p-i-n structure 200 that includes a p-type layer 103, an i-type layer 104, a n-type layer 105, a metal back layer 106 deposited atop said n-type layer 105 of the p-i-n structure 200. The n-type layer 105 comprises n-type donors 115 including phosphorus atoms. The n-type donors 115 include oxygen atoms at an atomic concentration comprised between 5% and 25% of the overall atomic composition of the n-type layer 105.

Abstract: An immersible and disposable decorative wristwatch includes at least one watch strap that can be selectively joined at its ends and fitted over the wearer's wrist, and watch works of the quartz oscillator type, run by a battery. The watch strap is laminated and consists of a first ply made of a flexible and waterproof thermoplastic material, and a second ply placed over the first ply, which is also made of a flexible and waterproof thermoplastic material that is transparent over at least a portion of its surface. The second ply is disposed adjacent to the first ply and laminated thereto by means of thermoplastic welds which define at least one hollow hermetically sealed chamber, arranged between the ends of the set of plies so assembled. The watch works are housed within the chamber with the portion of same indicating the time facing the transparent portion of the second ply.