Lindqvist polyoxometalates as electrolytes in p-type dye sensitized solar cells

Abstract

The development of new redox couples provides a clear strategy to improve power conversion efficiency (PCE) in p-type dye-sensitized solar cells (p-DSSCs) through enabling improvements in open-circuit voltage (VOC).

Dye-sensitized solar cells strike back

“…710 ) directly as redox mediators in p-DSCs, giving a four to five-fold increase in V OC compared to I À /I 3 À . 711 Increasing the solubility of POMs could increase the short-circuit current of these cells to deliver competitive efficiencies. Recently, a few solid-state p-DSCs (p-ssDSC) have been reported.…”

Recent advances in eco-friendly and cost-effective materials towards sustainable dye-sensitized solar cells

“…Unfortunately, the photoconversion efficiency of the "inverted" geometry has never approached that of the conventional geometry (lower by one order of magnitude 47 ), despite the great efforts in tailoring photocathode materials [48][49][50][51] and the development of dedicated sensitizers [52][53][54][55] and redox couples. 56,57 This is mainly ascribed to the lower photocurrent powered by p-DSSCs, as expected by their hole-driven charge diffusion processes. In both the n and p configurations, only one electrode is photoactive (the anode or the cathode, respectively), whereas the other operates as a standard electrode.…”

“…Both of them have a rather low natural abundance of 0.00011% in the Earth's crust, but only tungsten is considered a CRM. 229 Bakker et al 57 (where TBA = tetrabutylammonium), with redox potentials of −0.40 and −0.90 V, respectively (Fig. 7a).…”

Hierarchical NiO/CMK-3 Photocathode for a p-Type Dye-Sensitized Solar Cell with Improved Photoelectrochemical Performance and Fast Hole Transfer

“…The photocurrent is generated in these devices from dye-sensitized electron injection into n-type semiconductors, and conversion efficiency values as high as 12.3% have been reported [1]. Recently, dye-sensitized solar cells based on p-type semiconductors (p-DSSCs) have also attracted growing attention [2][3][4][5]. These have comparable theoretical efficiency to the n-DSSCs and similar operating principles with only the nature of the photoinjected charges being different.…”