Conţinutul numărului revistei |
Articolul precedent |
Articolul urmator |
567 0 |
SM ISO690:2012 KRESSDORF, Birte, MEYER, Tobias, BELENCHUK, Alexandr, SHAPOVAL, Oleg M., TEN, Brink, M., MELLES, S., HOFFMANN, Joerg, ROSS, Ulrich, MOSHNYAGA, Vasily T., SEIBT, Michael, BLOCHL, Peter E., JOOSS, Ch H.. Room-Temperature Hot-Polaron Photovoltaics in the Charge-Ordered State of a Layered Perovskite Oxide Heterojunction. In: Physical Review Applied, 2020, vol. 14, p. 0. ISSN 2331-7019. DOI: https://doi.org/10.1103/PhysRevApplied.14.054006 |
EXPORT metadate: Google Scholar Crossref CERIF DataCite Dublin Core |
Physical Review Applied | ||||||
Volumul 14 / 2020 / ISSN 2331-7019 | ||||||
|
||||||
DOI:https://doi.org/10.1103/PhysRevApplied.14.054006 | ||||||
Pag. 0-0 | ||||||
|
||||||
Rezumat | ||||||
Harvesting of solar energy by hot carriers from optically induced intraband transitions offers new perspectives for photovoltaic energy conversion. Clearly, mechanisms slowing down hot-carrier thermalization constitute a fundamental core of such pathways of third-generation photovoltaics. The intriguing concept of hot polarons stabilized by long-range phonon correlations in charge-ordered strongly correlated three-dimensional metal-oxide perovskite films has emerged and been demonstrated for Pr0.7Ca0.3MnO3 at low temperature. In this work, a tailored approach to extending such processes to room temperature is presented. It consists of a specially designed epitaxial growth of two-dimensional Ruddlesden-Popper Pr0.5Ca1.5MnO4 films on Nb:SrTiO3 with a charge-ordering transition at TCO ∼320 K. This opens the route to a different phonon-bottleneck strategy of slowing down carrier relaxation by strong coupling of electrons to cooperative lattice modes. |
||||||
Cuvinte-cheie energy conversion, Heterojunctions, Hot carriers, Manganese compounds, Metals, Niobium compounds, perovskite, Perovskite solar cells, phonons, Polarons, Praseodymium compounds, solar energy, Strontium titanates, temperature |
||||||
|