Determination of diffusion lengths in organic semiconductors: Correlation with solar cell performances - Sorbonne Université Accéder directement au contenu
Article Dans Une Revue Organic Electronics Année : 2016

Determination of diffusion lengths in organic semiconductors: Correlation with solar cell performances

Résumé

Organic semiconductors are promising candidates for future applications in solar energy conversion. Recent investigations of bulk heterojunction (BHJ) semiconductors have suggested a density of states and transport mechanisms by multiple trapping close to those observed in disordered inorganic thin films. That is why we have applied to BHJ thin films experiments that are currently used for disordered semiconductors. In addition to the steady state photoconductivity we have tested the ability of the steady state photocarrier grating (SSPG) technique to provide information on the minority carrier diffusion length. We found that SSPG can be applied to P3HT:PCBM thin films leading, for the best sample, to a diffusion length of the order of 125 nm. From the comparison of the transport parameters obtained on thin films with the performances of the devices integrating the latter, we conclude that SSPG is a very powerful tool for optimizing the BHJ thin film properties before their incorporation in solar devices.
Fichier principal
Vignette du fichier
Longeaud_2016_Determination_of.pdf (258.35 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-01288220 , version 1 (14-03-2016)

Identifiants

Citer

Christophe Longeaud, Amir Fath Allah, Javier Schmidt, Mustapha El Yaakoubi, Solenn Berson, et al.. Determination of diffusion lengths in organic semiconductors: Correlation with solar cell performances. Organic Electronics, 2016, 31, pp.253-257. ⟨10.1016/j.orgel.2016.01.043⟩. ⟨hal-01288220⟩
411 Consultations
199 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More