Carbon nanodot-based heterostructures for improving the charge separation and the photocurrent generation. Issue 15 (2nd April 2019)

• Record Type: Journal Article
• Authors: Bettini, Simona; Sawalha, Shadi; Carbone, Luigi; Giancane, Gabriele; Prato, Maurizio; Valli, Ludovico
• Is Part Of: Nanoscale. Volume 11:Issue 15(2019)
• Page Start: 7414
• Page End: 7423
• Publication Date: 2019-04-02
• Subjects: Nanoscience -- Periodicals; Nanotechnology -- Periodicals; 620.505
• DOI: 10.1039/c9nr00951e
• Languages: English
• ISSNs: 2040-3364

Abstract

Abstract : The possibility to employ carbon nanodots (CNDs) in solar devices was exploited by combining them with a fulleropyrrolidine derivative (FP2). Abstract : The possibility to employ carbon nanodots (CNDs) in solar devices was exploited by combining them with a fulleropyrrolidine derivative (FP2). The interaction between the two species was promoted by the presence of opposite electrostatic charges on CNDs (negatively charged) and FP2 (positively charged). The supramolecular dyad CNDs/FP2 generation was induced at the air/water interface of a Langmuir trough: water soluble CNDs were dissolved in the subphase and FP2 chloroform solution was spread on the subphase; the electrostatic interaction promoted the formation of the supramolecular adduct FP2/CNDs, which was then transferred onto solid substrates. Photo-induced charge transfer was promoted in the FP2/CNDs dyad and we demonstrated that the presence of CNDs increased the short-circuit current density, under light illumination, of a porphyrin–FP2/CNDs thin film by about 300% when compared with a more traditional porphyrin–FP2 solar device.