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Luminescent (Er,Ho)2O3 thin films by ALD to enhance the performance of silicon solar cells

Research output: Contribution to journalArticleScientificpeer-review


Original languageEnglish
Article number110787
Number of pages5
JournalSolar Energy Materials and Solar Cells
Publication statusE-pub ahead of print - 2020
Publication typeA1 Journal article-refereed


We have fabricated luminescent (Er,Ho)2O3 thin films by atomic layer deposition (ALD) and studied their capability to enhance the performance of state-of-the-art single-junction c-Si bifacial solar cells. The films convert IR photons (e.g. 1523 nm) by three- and two-photon upconversion process to emit visible-light in the 400–700 nm range. When the films were coupled with solar cells, ~3% improvement in the short-circuit current density (620 ± 5 to 638 ± 5 mAcm−2) was recorded under a simulated solar excitation equivalent to 16 suns. These findings highlight a potential of ALD for the design and fabrication of luminescent coatings for practical solar cell devices.


  • Atomic layer deposition, c-Si solar cell, Luminescence, Photonics, Upconversion

Publication forum classification

Field of science, Statistics Finland