4.6 Article

Designing indirect-direct bandgap transitions in double perovskites

Journal

MATERIALS HORIZONS
Volume 4, Issue 4, Pages 688-693

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/c7mh00239d

Keywords

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Funding

  1. Johns Hopkins University, Krieger School of Art and Sciences, Faculty Innovation Award
  2. NSF
  3. Division of Materials Research (DMR)
  4. Solid State Chemistry (SSMC)
  5. CAREER grant [DMR-1253562]
  6. Direct For Mathematical & Physical Scien
  7. Division Of Materials Research [1253562] Funding Source: National Science Foundation

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A general design strategy is presented for tuning the convergence of direct and indirect bandgaps based on chemical adjustment of the s- and p-orbital character of the conduction band minimum. To demonstrate the viability of the design strategy, we successfully synthesized a family of double perovskites: Cs2AgSbCl6 with an indirect bandgap and Cs2AgInCl6 with a direct bandgap and the solid solutions between the two.

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