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| Content Provider | Royal Society of Chemistry (RSC) |
|---|---|
| Author | Liu, Zixiao Zhang, Lisha Chen, Zhigang Yu, Nuo Wang, Zhaojie Li, Wei |
| Copyright Year | 2016 |
| Abstract | One of the prerequisites for the development of wireless nanobiodevices (such as nanorobots) is to utilise an in vivo energy source as a biopower component that is continuously available in the operational biological environment. To address this problem, herein we have developed a new model of a 980-nm laser driven photovoltaic cell (hereafter abbreviated as 980LD-PC) by incorporating a flexible up-converting luminescent film and flexible amorphous silicon thin film photovoltaic cell. NaYF4:Yb,Er-PET composite films are prepared by using film casting technology, and they exhibit excellent up-converting luminescence, flexibility and transparency. Subsequently, the composite film with NaYF4:Yb,Er/PET weight ratio of 20% is adhered on the surface of a flexible amorphous silicon film solar cell for constructing a flexible 980LD-PC photovoltaic cell. Under the irradiation of a 980-nm laser (intensity: 720 mW cm−2, area: 0.25 cm2) that is slightly lower than the conservative limit (726 mW cm−2) for human skin exposure, the resulting 980LD-PC exhibits strong up-converting luminescence, and it has a maximal electrical output of 94 μW. More importantly, after being covered with a layer of chicken skin (thickness: ca. 1 mm) as a model of biological tissue, 980LD-PC still exhibits bright up-converting luminescence and a maximal electrical output of 62 μW which is high enough to drive biological devices including in vivo nanorobots (power: at least 1 μW) and cardiac pacemakers (power: about 10 μW). This research paves the way for the development of novel flexible biopower sources to drive wireless nanobiodevices and other biodevices implanted under the human skin. |
| Starting Page | 42763 |
| Ending Page | 42769 |
| Page Count | 7 |
| File Format | HTM / HTML PDF |
| ISSN | 20462069 |
| Volume Number | 6 |
| Issue Number | 49 |
| Journal | RSC Advances |
| DOI | 10.1039/c6ra05123e |
| Language | English |
| Publisher | Royal Society of Chemistry |
| Access Restriction | Open |
| Subject Keyword | Solar cell Composite film Laser Luminescence Polyethylene terephthalate Biopower Amorphous silicon Chicken |
| Content Type | Text |
| Resource Type | Article |
| Subject | Chemistry Chemical Engineering |
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