NOVELTY - A dye sensitized solar cell (DSSC) (50) comprises an upper anti-reflecting layer configured to reduce a number of photons that reflect off the upper surface of the DSSC; a working layer (14) including a semiconductor and a dye sensitizer; a transparent electrode (23) disposed between the working layer and the upper anti-reflecting layer; a counter electrode; a generally transparent electrolyte (20) disposed between the working layer and the counter electrode; and a lower reflecting layer (34) configured to direct photons passing through the counter electrode back into the DSSC.    USE - As a dye sensitized solar cell (claimed) used in aviation applications.    ADVANTAGE - The dye sensitized solar cell is improved dye-sensitized solar cell; has increased photo energy conversion efficiency; exhibits significant absorption in the red and near infra-red (IR) regions; and exhibit a high photo-current efficiency.    DETAILED DESCRIPTION - A dye sensitized solar cell (DSSC) (50) comprises an upper anti-reflecting layer configured to reduce a number of photons that reflect off the upper surface of the DSSC; a working layer (14) including a semiconductor and a dye sensitizer; a transparent electrode (23) disposed between the working layer and the upper anti-reflecting layer; a counter electrode; a generally transparent electrolyte (20) disposed between the working layer and the counter electrode; and a lower reflecting layer (34) configured to direct photons passing through the counter electrode back into the DSSC. The dye sensitizer comprises a phthalocyanine derivative includes a carboxylic acid group to enhance an interaction between the semiconductor and the dye sensitizer. The transparent electrode and the counter electrode comprise a flexible substrate. INDEPENDENT CLAIMS are included for following:    (1) thermoelectric material for harvesting energy from waste heat, comprising at least one element selected from magnesium silicide (Mg2Si); a doped derivative of Mg2Si; Mg2Si-Ge; a doped derivative of Mg2Si-Ge; Mg2Si-Bi; a doped derivative of Mg2Si-Bi; silicon germanium (SiGe); and a doped derivative of SiGe; and    (2) producing a thermoelectric material for harvesting energy from waste heat involving preparing a mechanical alloy comprising at least two periodic elements including a first periodic element that is a metalloid, and a second periodic element that is either a metalloid or a metal; and binding the mechanical alloy together using spark plasma sintering.    DESCRIPTION OF DRAWING(S) - The figure shows view of dye sensitized solar cell.    Working layer (14)    Electrolyte (20)    Transparent electrode (23)    Reflecting layer (34)    Dye sensitized solar cell (34)