Extremely Slow Photoconductivity Response of CH3NH3PbI3 Perovskites Suggesting Structural Changes under Working Conditions (Articolo in rivista)

Type

• Articolo in rivista (Classe)
• Prodotto della ricerca (Classe)

Label

• Extremely Slow Photoconductivity Response of CH3NH3PbI3 Perovskites Suggesting Structural Changes under Working Conditions (Articolo in rivista) (literal)

Anno

• 2014-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

• 10.1021/jz501373f (literal)

Alternative label

• Gottesman, Ronen; Haltzi, Eynav; Gouda, Laxman; Tirosh, Shay; Bouhadana, Yaniv; Zaban, Arie; Mosconi, Edoardo; De Angelis, Filippo (2014)
  Extremely Slow Photoconductivity Response of CH3NH3PbI3 Perovskites Suggesting Structural Changes under Working Conditions
  in The journal of physical chemistry letters
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Gottesman, Ronen; Haltzi, Eynav; Gouda, Laxman; Tirosh, Shay; Bouhadana, Yaniv; Zaban, Arie; Mosconi, Edoardo; De Angelis, Filippo (literal)

Pagina inizio

• 2662 (literal)

Pagina fine

• 2669 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url

• http://pubs.acs.org/doi/abs/10.1021/jz501373f?journalCode=jpclcd (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 5 (literal)

Rivista

• ?The ?journal of physical chemistry letters (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali

• 8 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo

• 15 (literal)

Note

• ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• Ronen Gottesman , Eynav Haltzi , Laxman Gouda , Shay Tirosh , Yaniv Bouhadana , and Arie Zaban : Department of Chemistry, Center for Nanotechnology & Advanced Materials, Bar Ilan University, Ramat Gan 52900, Israel Edoardo Mosconi and Filippo De Angelis: Computational Laboratory for Hybrid/Organic Photovoltaics (CLHYO), CNR-ISTM, Via Elce di Sotto 8, I-06123 Perugia, Italy (literal)

Titolo

• Extremely Slow Photoconductivity Response of CH3NH3PbI3 Perovskites Suggesting Structural Changes under Working Conditions (literal)

Abstract

• Photoconductivity measurements of CH3NH3PbI3 deposited between two dielectric-protected Au electrodes show extremely slow response. The CH3NH3PbI3, bridging a gap of similar to 2000 nm, was subjected to a DC bias and cycles of 5 min illumination and varying dark duration. The approach to steady -state photocurrent lasted tens of seconds with a strong dependence on the dark duration preceding the illumination. On the basis of DFT calculations, we propose that under light + bias the methylammonium ions are freed to rotate and align along the electric field, thus modifying the structure of the inorganic scaffold. While ions alignment is expected to be fast, the adjustment of the inorganic scaffold seems to last seconds as reflected in the extremely slow photoconductivity response. We propose that under working conditions a modified, photostable, perovskite structure is formed, depending on the bias and illumination parameters. Our findings seem to clarify the origin of the well-known hysteresis in perovskite solar cells. (literal)

Prodotto di

• Design e test di sensibilizzatori e materiali per celle solari fotosensibilizzate (PM.P04.012.001) (Modulo)
• Istituto di scienze e tecnologie molecolari (ISTM) (Istituto)

Autore CNR

• FILIPPO DE ANGELIS (Persona)
• EDOARDO MOSCONI (Unità di personale esterno)

Incoming links:

Prodotto

• Istituto di scienze e tecnologie molecolari (ISTM) (Istituto)
• Design e test di sensibilizzatori e materiali per celle solari fotosensibilizzate (PM.P04.012.001) (Modulo)

Autore CNR di

• FILIPPO DE ANGELIS (Persona)
• EDOARDO MOSCONI (Unità di personale esterno)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• ?The ?journal of physical chemistry letters (Rivista)