Design and Demonstration of High-Efficiency Quantum Well Solar Cells Employing Thin Strained Superlattices.

ABSTRACT: Nanostructured quantum well and quantum dot III-V solar cells provide a pathway to implement advanced single-junction photovoltaic device designs that can capture energy typically lost in traditional solar cells. To realize such high-efficiency single-junction devices, nanostructured device designs must be developed that maximize the open circuit voltage by minimizing both non-radiative and radiative components of the diode dark current. In this work, a study of the impact of barrier thickness in strained multiple quantum well solar cell structures suggests that apparent radiative efficiency is suppressed, and the collection efficiency is enhanced, at a quantum well barrier thickness of 4 nm or less. The observed changes in measured infrared external quantum efficiency and relative lumines

SUBMITTER: Welser RE 

PROVIDER: S-EPMC6765021 | biostudies-literature | 2019 Sep

REPOSITORIES: biostudies-literature