Detail publikace

Ionic origin of a negative capacitance in lead halide perovskites

Originální název

Ionic origin of a negative capacitance in lead halide perovskites

Anglický název

Ionic origin of a negative capacitance in lead halide perovskites

Jazyk

en

Originální abstrakt

The origin of a negative capacitance observed in perovskite solar cells at intermediate and low frequencies remains unclear. Low trap density macroscopic single crystal MAPbBr(3) perovskites, prepared by means of an inverse temperature crystallization technique, with symmetric Au contacts is used to avoid the influence of defects and provide the information ongoing staunchly in the perovskite material. It is shown that the inductive behavior is dominant in the frequency range where capacitance possesses negative values. Accordingly, a model for the calculation of inductive elements and the description of their origin is presented. It is shown that, at high bias, there are two bias-dependent inductive elements, which corresponds to two different components of vacancy-assisted ionic diffusion in perovskite crystals, originating from Brand MA(+) ions.

Anglický abstrakt

The origin of a negative capacitance observed in perovskite solar cells at intermediate and low frequencies remains unclear. Low trap density macroscopic single crystal MAPbBr(3) perovskites, prepared by means of an inverse temperature crystallization technique, with symmetric Au contacts is used to avoid the influence of defects and provide the information ongoing staunchly in the perovskite material. It is shown that the inductive behavior is dominant in the frequency range where capacitance possesses negative values. Accordingly, a model for the calculation of inductive elements and the description of their origin is presented. It is shown that, at high bias, there are two bias-dependent inductive elements, which corresponds to two different components of vacancy-assisted ionic diffusion in perovskite crystals, originating from Brand MA(+) ions.

Dokumenty

BibTex


@article{BUT133551,
  author="Alexander {Kovalenko} and Jan {Pospíšil} and Oldřich {Zmeškal} and Jozef {Krajčovič} and Martin {Weiter}",
  title="Ionic origin of a negative capacitance in lead halide perovskites",
  annote="The origin of a negative capacitance observed in perovskite solar cells at intermediate and low frequencies remains unclear. Low trap density macroscopic single crystal MAPbBr(3) perovskites, prepared by means of an inverse temperature crystallization technique, with symmetric Au contacts is used to avoid the influence of defects and provide the information ongoing staunchly in the perovskite material. It is shown that the inductive behavior is dominant in the frequency range where capacitance possesses negative values. Accordingly, a model for the calculation of inductive elements and the description of their origin is presented. It is shown that, at high bias, there are two bias-dependent inductive elements, which corresponds to two different components of vacancy-assisted ionic diffusion in perovskite crystals, originating from Brand MA(+) ions.",
  address="Wiley",
  chapter="133551",
  doi="10.1002/pssr.201600418",
  howpublished="online",
  institution="Wiley",
  number="1",
  volume="1",
  year="2017",
  month="january",
  pages="1--5",
  publisher="Wiley",
  type="journal article in Web of Science"
}