A solar-redshift module (250, 250a, 250b, 250c, 250d) comprising: at least one collecting target (270, 270a, 270b) having a target wavelength and being selected from the group consisting of: (i) a growth vessel (270, 270a, 270b) containing a living photosynthetic organism in a growth medium for sustaining the living photosynthetic organism, wherein the target wavelength is a wavelength of increased photosynthetic response of the living photosynthetic organism; and (ii) a photovoltaic plate comprising a photovoltaic material, wherein the target wavelength is a wavelength of increased sensitivity of the photovoltaic material; at least one quantum dot vessel (10, 10a, 10b) comprising: a sealed cavity defined between a first plate and a second plate, the first plate being between the second plate and the collecting target (270, 270a, 270b); a quantum-dot suspension disposed in the sealed cavity and containing quantum dots that emit redshifted light having the target wavelength when irradiated by incident solar radiation; and a trapping reflector (80, 80a, 80b) that reflects at least a portion of the redshifted light emitted by the quantum dots toward the collecting target (270, 270a, 270b); and a focusing device (160, 160a, 160b, 160c) that focuses incident solar radiation onto the quantum dot vessel (10, 10a, 10b), wherein the focusing device (160, 160a, 160b, 160c), the at least one quantum-dot vessel (10, 10a, 10b), and the at least one collecting target (270, 270a, 270b) are configured such that the incident solar radiation focused into the solar redshift system strikes the at least one quantum-dot vessel (10, 10a, 10b) before striking the at least one collecting target (270, 270a, 270b); wherein the at least one collecting target (270, 270a, 270b) comprises a first collecting target and a second collecting target interposed between the focusing device (160, 160a, 160b, 160c) and the at least one quantum-dot vessel (10, 10a, 10b); wherein a focusing gap is defined between a first edge of the first collecting target and a second edge of the second collecting target, wherein the focusing device (160, 160a, 160b, 160c) directs incident solar radiation toward the quantum dot vessel (10, 10a, 10b) through the focusing gap. at least one collecting target (270, 270a, 270b) having a target wavelength and being selected from the group consisting of: (i) a growth vessel (270, 270a, 270b) containing a living photosynthetic organism in a growth medium for sustaining the living photosynthetic organism, wherein the target wavelength is a wavelength of increased photosynthetic response of the living photosynthetic organism; and (ii) a photovoltaic plate comprising a photovoltaic material, wherein the target wavelength is a wavelength of increased sensitivity of the photovoltaic material; (i) a growth vessel (270, 270a, 270b) containing a living photosynthetic organism in a growth medium for sustaining the living photosynthetic organism, wherein the target wavelength is a wavelength of increased photosynthetic response of the living photosynthetic organism; and (ii) a photovoltaic plate comprising a photovoltaic material, wherein the target wavelength is a wavelength of increased sensitivity of the photovoltaic material; at least one quantum dot vessel (10, 10a, 10b) comprising: a sealed cavity defined between a first plate and a second plate, the first plate being between the second plate and the collecting target (270, 270a, 270b); a quantum-dot suspension disposed in the sealed cavity and containing quantum dots that emit redshifted light having the target wavelength when irradiated by incident solar radiation; and a trapping reflector (80, 80a, 80b) that reflects at least a portion of the redshifted light emitted by the quantum dots toward the collecting target (270, 270a, 270b); and a sealed cavity defined between a first plate and a second plate, the first plate being between the second plate and the collecting target (270, 270a, 270b); a quantum-dot suspension disposed in the sealed cavity and containing quantum dots that emit redshifted light having the target wavelength when irradiated by incident solar radiation; and a trapping reflector (80, 80a, 80b) that reflects at least a portion of the redshifted light emitted by the quantum dots toward the collecting target (270, 270a, 270b); and a focusing device (160, 160a, 160b, 160c) that focuses incident solar radiation onto the quantum dot vessel (10, 10a, 10b), wherein the focusing device (160, 160a, 160b, 160c), the at least one quantum-dot vessel (10, 10a, 10b), and the at least one collecting target (270, 270a, 270b) are configured such that the incident solar radiation focused into the solar redshift system strikes the at least one quantum-dot vessel (10, 10a, 10b) before striking the at least one collecting target (270, 270a, 270b); wherein the at least one collecting target (270, 270a, 270b) comprises a first collecting target and a second collecting target interposed between the focusing device (160, 160a, 160b, 160c) and the at least one quantum-dot vessel (10, 10a, 10b); wherein a focusing gap is defined between a first edge of the first collecting target and a second edge of the second collecting target, wherein the focusing device (160, 160a, 160b, 160c) directs incident solar radiation toward the quantum dot vessel (10, 10a, 10b) through the focusing gap.