Fraunhofer ISE researchers say their newly fabricated gallium arsenide substrates (InP-on-GaAs wafers) can replace prime indium phosphide wafers and offer a scalable pathway to lower costs…
https://www.pv-magazine.com/2025/05/22/fraunhofer-ise-developing-inp-on-gaas-substrates-for-iii-v-solar-cells/
