Abstract
We propose a method for increasing the yearly electrical energy output of certain kinds of photoelectrochemical cells by close to 200%, per photoelectrode area, without the need for expensive tracking systems or sensitive focusing concentrators. The method is optical boosting with totally stationary, inexpensive, low-concentration, nonimaging collectors. The best-suited class of photoelectrochemical cells has a photoelectrode that is optically active on both of its sides, as well as an efficiency and stability that increase with temperature under typical operating conditions.
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