Probing the occupied and unoccupied density of states of hybrid Perovskites

Selina Olthof, Ines Schmidt, S.X. Tao, Klaus Meerholz

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademic

Abstract

In recent years, the interest in hybrid organic - inorganic perovskites rose at a rapid pace due to their tremendous success in the field of photovoltaics. In addition to the thin film properties of the active layer, the performance of optoelectronic devices strongly depends on the appropriate energetic alignment between the active- and adjacent layers. In order to choose adequate transport materials for the increasingly complex hybrid perovskite compositions in a non-trial-and-error fashion, it is important to understand how the induced changes in band gap relate to shifts in the valence and/or conduction band.
In this poster, I will present recent findings regarding measurements of the electronic structure of various hybrid perovskites using photoelectron spectroscopy. Hereby, we cove the whole range of lead and tin based perovskite systems, therefore varying the halogens (Cl, Br, I) as well as cations (Cs, MA, FA). We investigate how the changes in composition influence the ionization energy as well as electron affinity and compare these results with DFT calculations.
LanguageEnglish
Title of host publicationMRS Spring Meeting & Exhibit: Symposia EN15 : Novel Materials of Perovskite Semiconductors
StatePublished - 2018
Event2008 Novel materials of Perovskite Semiconductors
- Phoenix, Arizona, United States
Duration: 2 Apr 20186 Apr 2018

Conference

Conference2008 Novel materials of Perovskite Semiconductors
CountryUnited States
CityPhoenix, Arizona
Period2/04/186/04/18
Other2018 Materials Research Society Spring Meeting. Symposium EN15

Fingerprint

Electron affinity
Halogens
Tin
Ionization potential
Photoelectron spectroscopy
Conduction bands
Chemical analysis
Discrete Fourier transforms
Optoelectronic devices
Electronic structure
Cations
Energy gap
Thin films
perovskite
Lead

Cite this

Olthof, S., Schmidt, I., Tao, S. X., & Meerholz, K. (2018). Probing the occupied and unoccupied density of states of hybrid Perovskites. In MRS Spring Meeting & Exhibit: Symposia EN15 : Novel Materials of Perovskite Semiconductors [EN 15.06.07]
Olthof, Selina ; Schmidt, Ines ; Tao, S.X. ; Meerholz, Klaus. / Probing the occupied and unoccupied density of states of hybrid Perovskites. MRS Spring Meeting & Exhibit: Symposia EN15 : Novel Materials of Perovskite Semiconductors . 2018.
@inproceedings{8192ea8c6fb849709022b5bb4e881ba6,
title = "Probing the occupied and unoccupied density of states of hybrid Perovskites",
abstract = "In recent years, the interest in hybrid organic - inorganic perovskites rose at a rapid pace due to their tremendous success in the field of photovoltaics. In addition to the thin film properties of the active layer, the performance of optoelectronic devices strongly depends on the appropriate energetic alignment between the active- and adjacent layers. In order to choose adequate transport materials for the increasingly complex hybrid perovskite compositions in a non-trial-and-error fashion, it is important to understand how the induced changes in band gap relate to shifts in the valence and/or conduction band.In this poster, I will present recent findings regarding measurements of the electronic structure of various hybrid perovskites using photoelectron spectroscopy. Hereby, we cove the whole range of lead and tin based perovskite systems, therefore varying the halogens (Cl, Br, I) as well as cations (Cs, MA, FA). We investigate how the changes in composition influence the ionization energy as well as electron affinity and compare these results with DFT calculations.",
author = "Selina Olthof and Ines Schmidt and S.X. Tao and Klaus Meerholz",
year = "2018",
language = "English",
booktitle = "MRS Spring Meeting & Exhibit: Symposia EN15 : Novel Materials of Perovskite Semiconductors",

}

Olthof, S, Schmidt, I, Tao, SX & Meerholz, K 2018, Probing the occupied and unoccupied density of states of hybrid Perovskites. in MRS Spring Meeting & Exhibit: Symposia EN15 : Novel Materials of Perovskite Semiconductors ., EN 15.06.07, 2008 Novel materials of Perovskite Semiconductors
, Phoenix, Arizona, United States, 2/04/18.

Probing the occupied and unoccupied density of states of hybrid Perovskites. / Olthof, Selina; Schmidt, Ines; Tao, S.X.; Meerholz, Klaus.

MRS Spring Meeting & Exhibit: Symposia EN15 : Novel Materials of Perovskite Semiconductors . 2018. EN 15.06.07.

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademic

TY - GEN

T1 - Probing the occupied and unoccupied density of states of hybrid Perovskites

AU - Olthof,Selina

AU - Schmidt,Ines

AU - Tao,S.X.

AU - Meerholz,Klaus

PY - 2018

Y1 - 2018

N2 - In recent years, the interest in hybrid organic - inorganic perovskites rose at a rapid pace due to their tremendous success in the field of photovoltaics. In addition to the thin film properties of the active layer, the performance of optoelectronic devices strongly depends on the appropriate energetic alignment between the active- and adjacent layers. In order to choose adequate transport materials for the increasingly complex hybrid perovskite compositions in a non-trial-and-error fashion, it is important to understand how the induced changes in band gap relate to shifts in the valence and/or conduction band.In this poster, I will present recent findings regarding measurements of the electronic structure of various hybrid perovskites using photoelectron spectroscopy. Hereby, we cove the whole range of lead and tin based perovskite systems, therefore varying the halogens (Cl, Br, I) as well as cations (Cs, MA, FA). We investigate how the changes in composition influence the ionization energy as well as electron affinity and compare these results with DFT calculations.

AB - In recent years, the interest in hybrid organic - inorganic perovskites rose at a rapid pace due to their tremendous success in the field of photovoltaics. In addition to the thin film properties of the active layer, the performance of optoelectronic devices strongly depends on the appropriate energetic alignment between the active- and adjacent layers. In order to choose adequate transport materials for the increasingly complex hybrid perovskite compositions in a non-trial-and-error fashion, it is important to understand how the induced changes in band gap relate to shifts in the valence and/or conduction band.In this poster, I will present recent findings regarding measurements of the electronic structure of various hybrid perovskites using photoelectron spectroscopy. Hereby, we cove the whole range of lead and tin based perovskite systems, therefore varying the halogens (Cl, Br, I) as well as cations (Cs, MA, FA). We investigate how the changes in composition influence the ionization energy as well as electron affinity and compare these results with DFT calculations.

UR - https://mrsspring2018.zerista.com/event/member/466459

M3 - Conference contribution

BT - MRS Spring Meeting & Exhibit: Symposia EN15 : Novel Materials of Perovskite Semiconductors

ER -

Olthof S, Schmidt I, Tao SX, Meerholz K. Probing the occupied and unoccupied density of states of hybrid Perovskites. In MRS Spring Meeting & Exhibit: Symposia EN15 : Novel Materials of Perovskite Semiconductors . 2018. EN 15.06.07.