Turnstile Diamond Dipole Nanoantenna Based Smart City Compatible Thin Film Solar Cell

A unit cell design of a thin film solar cell incorporating turnstile diamond dipole nanoantenna as a means of light trapping structure is proposed and investigated. Diamond dipole nanoantenna (DDNA) is a transformed version of the conventional dipole nanoantenna whereby the arms of the dipole nanoantenna are replaced by diamond shaped nanoparticles. In contrast to the dipole nanoantenna, DDNA offers larger area for field confinement and it resonates in the maximum solar spectrum range. The reduction of reflection losses along with generation of localized surface plasmons leads to improved photovoltaic characteristics of the thin film solar cell. The suggested TFSC model offers 99% absorption with 1.52 times photocurrent calculated based on finite element approach.