Exploring the Structural Competition between the Black and the Yellow Phase of CsPbI3

The realization of stable inorganic perovskites is crucial to enable low-cost solution-processed photovoltaics. However, the main candidate material, CsPbI3, suffers from a spontaneous phase transition at room temperature towards a photo-inactive orthorhombic δ-phase (yellow phase). Here we used theoretical and experimental methods to study the structural and electronic features that determine the stability of the CsPbI3 perovskite. We argued that the two physical characteristics that favor the black perovskite phase at low temperatures are the strong spatial confinement in nanocrystalline structures and the level of electron doping in the material. Within this context, we discussed practical procedures for the realization of long-lasting inorganic lead halide perovskites.

Medienart:

E-Artikel

Erscheinungsjahr:

2021

Erschienen:

2021

Enthalten in:

Zur Gesamtaufnahme - volume:11

Enthalten in:

Nanomaterials (Basel, Switzerland) - 11(2021), 5 vom: 13. Mai

Sprache:

Englisch

Beteiligte Personen:

Deretzis, Ioannis [VerfasserIn]
Bongiorno, Corrado [VerfasserIn]
Mannino, Giovanni [VerfasserIn]
Smecca, Emanuele [VerfasserIn]
Sanzaro, Salvatore [VerfasserIn]
Valastro, Salvatore [VerfasserIn]
Fisicaro, Giuseppe [VerfasserIn]
La Magna, Antonino [VerfasserIn]
Alberti, Alessandra [VerfasserIn]

Links:

Volltext

Themen:

CsPbI3
Density functional theory
High-resolution electron microscopy
Inorganic lead halide perovskites
Journal Article

Anmerkungen:

Date Revised 15.06.2021

published: Electronic

Citation Status PubMed-not-MEDLINE

doi:

10.3390/nano11051282

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM326166777