Journal
NANO RESEARCH
Volume 10, Issue 6, Pages 2130-2145Publisher
TSINGHUA UNIV PRESS
DOI: 10.1007/s12274-016-1402-5
Keywords
flexible perovskite solar cells; indoor light harvesting; atomic layer deposition; nanocrystalline scaffolds; flexible photovoltaics; energy harvesting
Categories
Funding
- MIUR for PRIN AQUASOL project, Polo Solare Organico Regione Lazio [2012A4Z2RY]
Ask authors/readers for more resources
This is the first report of an investigation on flexible perovskite solar cells for artificial light harvesting by using a white light-emitting diode (LED) lamp as a light source at 200 and 400 lx, values typically found in indoor environments. Flexible cells were developed using either low-temperature sol-gel or atomiclayer-deposited compact layers over conducting polyethylene terephthalate (PET) substrates, together with ultraviolet (UV)-irradiated nanoparticle TiO2 scaffolds, a CH3NH3PbI3-xClx perovskite semiconductor, and a spiro-MeOTAD hole transport layer. By guaranteeing high-quality carrier blocking (via the 10-40 nm-thick compact layer) and injection (via the nanocrystalline scaffold and perovskite layers) behavior, maximum power conversion efficiencies (PCE) and power densities of 10.8% and 7.2 mu W.cm(-2), respectively, at 200 lx, and 12.1% and 16.0 mu W.cm(-2), respectively, at 400 lx were achieved. These values are the state-of-the-art, comparable to and even exceeding those of flexible dye-sensitized solar cells under LED lighting, and significantly greater than those for flexible amorphous silicon, which are currently the main flexible photovoltaic technologies commercially considered for indoor applications. Furthermore, there are significant margins of improvement for reaching the best levels of efficiency for rigid glass-based counterparts, which we found was a high of PCE similar to 24% at 400 lx. With respect to rigid devices, flexibility brings the advantages of being low cost, lightweight, very thin, and conformal, which is especially important for seamless integration in indoor environments.
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