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“Background Much of the recent effort to develop photovoltaics (PV) has focused on third-generation PV. The third-generation PV is defined by cost and power conversion efficiency (PCE) greater than the Shockley-Queisser limit of 32% [1]. It can be reached through device architecture innovations, multiple-carrier generation using impact ionization, and new materials. Colloidal quantum dots (CQDs) have been proposed as useful materials for third-generation PV because of their ability to generate multiple excitons. Also, by changing the physical dimensions of CQDs, band gaps can be tuned from the visible to the infrared region using low-cost solution-processed fabrication. CQD PV has been studied in various ways using the following: Schottky CQD solar cells [2], depleted heterojunction CQD solar cells [3], and CQD-sensitized solar cells [4].