Question

Transparent conducting electrodes are used to enable as much sunlight as possible reach the p-n junction

Answer 1

This article reviews transparent oxide optoelectronic devices based on our efforts focusing on transparent thin-film transistors fabricated from single-crystalline films of InGaO3(ZnO)5 with a natural superlattice structure, near-ultraviolet (UV) emitting diodes composed of heteroepitaxially grown p-type SrCu2O2 and n-type ZnO, and single-crystalline NiO and ZnO pn-heterojunction diode UV detectors.