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Solar Cells: Dielectric Response: Answer to Many Questions in the Methylammonium Lead Halide Solar Cell Absorbers (Adv. Energy Mater. 19/2017)
Author(s) -
Anusca Irina,
Balčiūnas Sergejus,
Gemeiner Pascale,
Svirskas Šarūnas,
Sanlialp Mehmet,
Lackner Gerhard,
Fettkenhauer Christian,
Belovickis Jaroslavas,
Samulionis Vytautas,
Ivanov Maksim,
Dkhil Brahim,
Banys Juras,
Shvartsman Vladimir V.,
Lupascu Doru C.
Publication year - 2017
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.201770107
Subject(s) - polaron , materials science , dielectric , halide , solar cell , perovskite (structure) , dipole , ion , charge carrier , optoelectronics , chemical physics , inorganic chemistry , physics , crystallography , chemistry , quantum mechanics , electron
Charge carriers in methylammonium lead perovskite solar cell absorbers assume a combined (hyper‐) polaronic state combining a classical Fröhlich polaron with a micelle‐like arrangement of electric dipoles formed by the methylammonium ions. This “micellion” provides an extra contribution to the dielectric constant which screens defects but maintains mobility of the polaron. This is reported by Doru C. Lupascu and co‐workers in article number 1700600 . In the image, the structure of the hyperpolaron is shown.