Article Dans Une Revue Dyes and Pigments Année : 2022

Near Ultra-Violet absorbers for transparent organic solar cells

Résumé

We describe the synthesis of two new dumbbell-shaped small molecules used as near ultraviolet absorbers for transparent organic solar cell application. The electron-donor TAT units, sandwiching the central chromophore, constitute very efficient π-stacking platforms that are nevertheless highly soluble thanks to the presence of three alkyl chains. The TAT units are used in combination, with a small central electron donor unit, either a carbazole or a thieno[3,2-b]thiophene (TT) unit. The two new dumbbell-shaped small molecules including only electron-donor units are strongly absorbing in the near UV range, due to the reduced electronic conjugation. Combined with a suitable hole mobility, the most conjugated thieno[3,2-b]thiophene-based derivative, when used as electrondonor component in a bulk heterojunction organic solar cell, exhibits a 48% of average visible transmittance with a power conversion efficiency close to 2%.
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Dates et versions

hal-03795513 , version 1 (04-10-2022)

Identifiants

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Chaima Mahmoudi, Wenziz Muzuzu, Sadiara Fall, Yuhan Zhong, Christophe Melart, et al.. Near Ultra-Violet absorbers for transparent organic solar cells. Dyes and Pigments, 2022, 207, pp.110752. ⟨10.1016/j.dyepig.2022.110752⟩. ⟨hal-03795513⟩
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