Tandem is the next step — not the last one.
The same II-VI materials family that anchors Tru-Twin™ can be band-gap-tuned across the solar spectrum, opening a path to a three-junction thin-film device: three stacked absorbers, each harvesting the slice of sunlight it converts best.
Triple-junction devices are how space photovoltaics broke past the single-junction ceiling decades ago — at costs only satellites could bear. Darwin’s vision is the terrestrial version: multijunction physics on low-cost, high-throughput thin-film manufacturing.
Research partners and long-horizon investors — this is the conversation for you.
