A silicon nanocrystal/polymer nanocomposite as a down-conversion layer in organic and hybrid solar cells. Issue 27 (18th June 2015)

• Record Type: Journal Article
• Authors: Svrcek, V.; Yamanari, T.; Mariotti, D.; Mitra, S.; Velusamy, T.; Matsubara, K.
• Is Part Of: Nanoscale. Volume 7:Issue 27(2015)
• Page Start: 11566
• Page End: 11574
• Publication Date: 2015-06-18
• Subjects: Nanoscience -- Periodicals; Nanotechnology -- Periodicals; 620.505
• DOI: 10.1039/c5nr02703a
• Languages: English
• ISSNs: 2040-3364

Abstract

Abstract : Demonstration of silicon nanocrystal down-conversion enhancement in PTB7:[70]PCBM based solar cells. Abstract : Silicon nanocrystal (Si-nc) down-conversion is demonstrated to enhance organic and hybrid organic/inorganic bulk heterojunction solar cells based on PTB7:[70]PCBM bulk heterojunction devices. Surfactant free surface-engineered Si-ncs can be integrated into the device architecture to be optically active and provide a means of effective down-conversion of blue photons (high energy photons below ∼450 nm) into red photons (above ∼680 nm) leading to 24% enhancement of the photocurrent under concentrated sunlight. We also demonstrate that the down-conversion effect under 1-sun is enhanced in the case of hybrid solar cells where engineered Si-ncs are also included in the active layer.