The absorption of the sun's radiation and its efficient conversion to useful work by a photovoltaic solar cell is of interest to the community at large. Scientists and engineers are particularly interested in approaches that exceed the Shockley-Queisser limit of photovoltaic solar-energy conversion. The abstract notion of increasing the efficiency of photovoltaic solar cells by constructing a three-transition solar cell via an absorber with intermediate levels is well-established. Until now, proposed approaches to realize the three-transition solar cell do not render the efficiency gains that are theorized; therefore, researchers are experimenting to ascertain where the faults lie. In my opinion, it is unclear if the abstract efficiency gains are obtainable. Furthermore, it is difficult to determine whether three-transition absorbers are even incorporated in the existing three-transition solar cell prototypes. I assert that there are material systems derived from the technologically important compound semiconductors and their ternary alloys that more clearly determine the suitability of employing nanostructured absorbers to realize a three-transition solar cell.6 4 Efficiency limits of ideal solar energy converters . . . . . . . . . . . . . . . . 7 5 The region of high-efficiency solar energy conversion. . . . . . . . . . . . . . 13 6 Reduced band diagram of an absorber with a single trap level located in the previouslyanbsp;...
|Title||:||Design, Experiment, and Analysis of a Photovoltaic Absorbing Medium with Intermediate Levels|
|Author||:||Michael Y. Levy|
|Publisher||:||ProQuest - 2008|