Improving efficiency and stability of perovskite solar cells with photocurable fluoropolymers

American Association for the Advancement of Science (AAAS) - Tập 354 Số 6309 - Trang 203-206 - 2016
Federico Bella1, Gianmarco Griffini2, Juan‐Pablo Correa‐Baena3, Guido Saracco4, Michaël Grätzel5, Anders Hagfeldt3, Stefano Turri2, Claudio Gerbaldi1
1Group for Applied Materials and Electrochemistry (GAME Lab), CHENERGY Group, Department of Applied Science and Technology (DISAT), Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129, Torino, Italy.
2Department of Chemistry, Materials and Chemical Engineering “Giulio Natta”, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
3Laboratory of Photomolecular Science, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne (EPFL), Chemin des Alambics, Station 3, 1015, Lausanne, Switzerland.
4Center for Sustainable Futures @PoliTO, Istituto Italiano di Tecnologia, Corso Trento 21, 10129, Torino, Italy.
5Laboratory of Photonics and Interfaces, Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), Station 3, 1015, Lausanne, Switzerland.

Tóm tắt

Improving the stability of perovskite solar cells Inorganic-organic perovskite solar cells have poor long-term stability because ultraviolet light and humidity degrade these materials. Bella et al. show that coating the cells with a water-proof fluorinated polymer that contains pigments to absorb ultraviolet light and re-emit it in the visible range can boost cell efficiency and limit photodegradation. The performance and stability of inorganic-organic perovskite solar cells are also limited by the size of the cations required for forming a correct lattice. Saliba et al. show that the rubidium cation, which is too small to form a perovskite by itself, can form a lattice with cesium and organic cations. Solar cells based on these materials have efficiencies exceeding 20% for over 500 hours if given environmental protection by a polymer coating. Science , this issue pp. 203 and 206

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American Association for the Advancement of Science (AAAS)

Tập 354 Số 6309

203-206

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