A solar cell assembly is provided, the configuration of which effectuates artificial tropism. The solar cell assembly may include a combination of at least one transparent solar cell and at least one opaque solar cell. The at least one transparent solar cell may transmit some wavelength(s) of incident sunlight while the at least one opaque solar cell may transmit some wavelength(s) of incident sunlight and absorbing some other wavelength(s) of incident sunlight. The transmitted wavelength(s) of incident sunlight excite or cause one or more shape-changing elements that support the at least one transparent solar cell and the at least one opaque solar cell to actuate in a manner that causes the solar cell assembly to re-orient itself towards a direction of the incident sunlight.