A 25 mA cm⁻² dye-sensitized solar cell based on a near-infrared-absorbing organic dye and application of the device in SSM-DSCs

Abstract

A blue organic near infrared (NIR) absorbing sensitizer, AP25, is investigated for use in broadly absorbing dye-sensitized solar cells (DSCs).

Dye-sensitized solar cells strike back

“… 266 A 3,4-thienothiophene (3,4-TT) group was inserted between the CPDT and CAA groups of C218 to give AP25. 267 The 3,4-TT building block is proaromatic by valence bond theory upon ICT, and excited-state aromaticity is observed computationally. 268 Proaromatic groups allow for lower energy excitations, which enables the use of lower energy NIR photons.…”

Integrating GaAs, Si, and Dye-Sensitized Solar Cells in Multijunction Devices and Probing Harsh Condition Behavior

“…D35 and B11 allow for complementary spectral use with both dyes collecting photons over 200 nm ranges (400–600 and 600–800 nm, respectively). Recently, AP25 has been used as a bottom DSC subcell in a three-subcell SSM-DSC device . This sensitizer is attractive as an organic sensitizer given the record high photocurrent observed in a DSC device based on organic dyes using AP25 co-sensitized with D35 .…”

“…MK2 and Black Dye were purchased from Sigma-Aldrich and used as received. Co­(bpy) 3 3+/2+ and Co­(bpy-pz) 2 3+/2+ were prepared by following literature procedures. , AP25 was prepared as previously described . 1H,1H,2H,2H-Perfluorooctyltrimethoxysilane (PFTS) was purchased from Beantown Chemical Company.…”

“…D35 , B11 , and Black Dye DSCs were prepared as reported in the literature. ,, For MK2 (second subcell), B11 (bottom subcell), and AP25 + D35 (bottom subcell) devices, the electrodes were prepared as recently reported. , …”

Perovskite Quantum Dot Solar Cells: An Overview of the Current Advances and Future Perspectives

“…This architecture is the most used for chalcogenide QD cells [61,62] and has naturally become the starting point for PQD-based devices. These devices adapt the technology previously developed for dye-sensitized solar cells, [142][143][144] in which the QDs are dispersed in a mesoporous-TiO 2 (m-TiO 2 ), that is, the QDs are used instead of the dye. The m-TiO 2 provides a large interfacial area with the absorber, providing a suitable electron collection.…”