Stokes-Shift-Engineered Indium Phosphide Quantum Dots for Efficient Luminescent Solar Concentrators.

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ID: 264838
2018
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Abstract
Luminescent solar concentrators (LSCs) show promise because of their potential for low-cost, large-area, and high-efficiency energy harvesting. Stokes shift engineering of luminescent quantum dots (QDs) is a favorable approach to suppress reabsorption losses in LSCs; however, the use of highly toxic heavy metals in QDs constitutes a serious concern for environmental sustainability. Here, we report LSCs based on cadmium-free InP/ZnO core/shell QDs with type-II band alignment that allow for the suppression of reabsorption by Stokes shift engineering. The spectral emission and absorption overlap was controlled by the growth of a ZnO shell on an InP core. At the same time, the ZnO layer also facilitates the photostability of the QDs within the host matrix. We analyzed the optical performance of indium-based LSCs and identified the optical efficiency as 1.45%. The transparency, flexibility, and cadmium-free content of the LSCs hold promise for solar window applications.
Reference Key
sadeghi2018stokesshiftengineeredacs Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Sadeghi, Sadra;Bahmani Jalali, Houman;Melikov, Rustamzhon;Ganesh Kumar, Baskaran;Mohammadi Aria, Mohammad;Ow-Yang, Cleva W;Nizamoglu, Sedat;
Journal ACS applied materials & interfaces
Year 2018
DOI
10.1021/acsami.7b19144
URL
Keywords
quantum dots solar cell luminescent solar concentrator stokes shift band alignment indium phosphide (inp) reabsorption type-ii

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