> This is not a new invention - it's called a multi junction solar cell.
The photon absorption mechanism of multi-junction solar cells is still energy-transfer via electron-hole pair production.
This paper is utilizing excitons for the energy transfer, which truly is a different beast.
[One liner description of excitons: It is a positive and negative charge bound together by electrostatic attraction. It acts a lot like hydrogen with a hole taking the role of the proton.] (OK, that was two lines.)
The photon absorption mechanism of multi-junction solar cells is still energy-transfer via electron-hole pair production.
This paper is utilizing excitons for the energy transfer, which truly is a different beast.
[One liner description of excitons: It is a positive and negative charge bound together by electrostatic attraction. It acts a lot like hydrogen with a hole taking the role of the proton.] (OK, that was two lines.)