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Enhancing light harvesting by hierarchical functionally graded transparent conducting Al-doped ZnO nano- and mesoarchitectures

Authors
Journal
Solar Energy Materials and Solar Cells
0927-0248
Publisher
Elsevier
Volume
128
Identifiers
DOI: 10.1016/j.solmat.2014.05.035
Keywords
  • Hierarchical Structures
  • Zinc Oxide
  • Electrodes
  • Porous Materials
  • Photovoltaic Materials

Abstract

Abstract A functionally graded Al-doped ZnO structure is presented which combines conductivity, visible transparency and light scattering with mechanical flexibility. The nano- and meso-architectures, constituted by a hierarchical, large surface area, mesoporous tree-like structure evolving in a compact layer, are synthesized at room temperature and are fully compatible with plastic substrates. Light trapping capability is demonstrated by showing up to 100% improvement of light absorption of a low bandgap polymer employed as the active layer.

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