Highly efficient 'nanocoax' solar cell inspired by coaxial cable

Traditionally, the goal of high power conversion efficiency in thin film solar cells has been compromised by opposing optical and electrical constraints – while a cell needs to be thick enough to absorb adequate amounts of light, it must also be thin enough for the extraction of current. Rising to this “thick and thin” challenge, researchers at Boston College have designed a nanoscale solar cell based on the age-old technology that created the coaxial cable, promising a higher conversion efficiency than any thin film solar cell yet seen.

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