Journal
APPLIED PHYSICS LETTERS
Volume 102, Issue 7, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4793397
Keywords
-
Categories
Funding
- National Science Fund for Distinguished Young Scholar [60925016]
- U.S. DOE [DE-SC0006433]
- National Basic Research Program of China [2011CB921901]
- National Natural Science Foundation of China [11174173]
- External Cooperation Program of Chinese Academy of Sciences
- U.S. Department of Energy (DOE) [DE-SC0006433] Funding Source: U.S. Department of Energy (DOE)
Ask authors/readers for more resources
First-principles computations are employed to investigate the electronic structures and optical absorption of rhombohedral BiFeO3 under uniaxial compression and biaxial tension. We find that the bandgap of BiFeO3 is reduced under uniaxial compression, and it can be tuned to the ideal value for photovoltaic applications; furthermore, the indirect-to-direct bandgap transition occurs, which would lead to much enhanced optical absorption near the band edge. Similar results are found for biaxial tensile strain. Strong optical absorption is critical to build efficient solar cells based on ferroelectric thin films; strain engineering is thus a practical route towards realizing this scheme, in which no junction is needed to separate charge carriers. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4793397]
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available