Publikationsdatum:
2016-01-09
Beschreibung:
Metal halide perovskite photovoltaic cells could potentially boost the efficiency of commercial silicon photovoltaic modules from approximately 20 toward 30% when used in tandem architectures. An optimum perovskite cell optical band gap of ~1.75 electron volts (eV) can be achieved by varying halide composition, but to date, such materials have had poor photostability and thermal stability. Here we present a highly crystalline and compositionally photostable material, [HC(NH2)2](0.83)Cs(0.17)Pb(I(0.6)Br(0.4))3, with an optical band gap of ~1.74 eV, and we fabricated perovskite cells that reached open-circuit voltages of 1.2 volts and power conversion efficiency of over 17% on small areas and 14.7% on 0.715 cm(2) cells. By combining these perovskite cells with a 19%-efficient silicon cell, we demonstrated the feasibility of achieving 〉25%-efficient four-terminal tandem cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉McMeekin, David P -- Sadoughi, Golnaz -- Rehman, Waqaas -- Eperon, Giles E -- Saliba, Michael -- Horantner, Maximilian T -- Haghighirad, Amir -- Sakai, Nobuya -- Korte, Lars -- Rech, Bernd -- Johnston, Michael B -- Herz, Laura M -- Snaith, Henry J -- New York, N.Y. -- Science. 2016 Jan 8;351(6269):151-5. doi: 10.1126/science.aad5845.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, UK. ; Helmholtz-Zentrum Berlin fur Materialien und Energie, Institute for Silicon Photovoltaics, Kekulestrasse 5, 12489 Berlin, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26744401" target="_blank"〉PubMed〈/a〉
Print ISSN:
0036-8075
Digitale ISSN:
1095-9203
Thema:
Biologie
,
Chemie und Pharmazie
,
Informatik
,
Medizin
,
Allgemeine Naturwissenschaft
,
Physik
Permalink
