DataVXACS Applied Energy MaterialsPaper
journal article·2020-06-22

Colloidal Quantum Dot Photovoltaics Using Ultrathin, Solution-Processed Bilayer In2O3/ZnO Electron Transport Layers with Improved Stability

Ahmad R. Kirmani, Flurin Eisner, Ahmed E. Mansour, Yuliar Firdaus, Neha Chaturvedi, Akmaral Seitkhan, Mohamad I. Nugraha, Emre Yarali, F. Pelayo Garcı́a de Arquer, Edward H. Sargent, Thomas D. Anthopoulos, Aram Amassian

ACS Applied Energy Materials· Volume 3· Issue 6
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Source abstract

Abstract

Solution-processed colloidal quantum dot (CQD) photovoltaics (PVs) continue to mature with improvements in device architectures and ligand exchange strategies. Carrier selective contacts extract photogenerated charge carriers from the CQD absorber; however, the role of the electron-transporting layer (ETL) in stability remains unclear. Herein, we find that the typically used >100 nm thick ZnO ETL suffers from parasitic absorption and carrier recombination resulting in unstable n–i–p solar cells with faster UV-degradation. We address this by developing an ultrathin (ca. 20 nm), quantum-confined, solution-processed In2O3/ZnO ETL. This bilayer ETL results in solar cells with significantly improved overall stability without compromising performance, with an 11.1% power conversion efficiency hero device.
Source: openalex_inverted_index · Quality: baseline

Research context

Electronic materials

OpenAlex topics: Quantum Dots Synthesis And Properties · Perovskite Materials and Applications · Chalcogenide Semiconductor Thin Films

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Physical Sciences and Engineering Division, KAUST Solar Center (KSC), King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia

Department of Physics, The Centre for Plastic Electronics, Imperial College London, London SW7 2AZ, United Kingdom

Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario M5S 3G4, Canada

Department of Materials Science and Engineering, North Carolina State University, Raleigh, North Carolina 27695, United States

Funding

King Abdullah University of Science and Technology

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