Novel and Stable D-A-π-A Dyes for Efficient Solid-State Dye-Sensitized Solar Cells.

ABSTRACT: Two novel organic donor-acceptor-π-acceptor sensitizers, W7 and W8, have been applied in efficient solid-state dye-sensitized solar cells (ssDSSCs). Using 2,2',7,7'-tetrakis(N,N-di-p-methoxyphenyl-amine) 9,9'-spirobifluorene (Spiro-OMeTAD) as hole-transport material (HTM), an excellent power conversion efficiency of 6.9% was recorded for W7, together with an excellent photocurrent of 10.51 mA cm^-2 and a high open-circuit voltage of 880 mV under standard AM 1.5 G illumination (100 mW cm^-2). The solid-state solar cells based on W8 showed an efficiency of 5.2%, with a good photocurrent of 9.55 mA cm^-2 and an open-circuit voltage of 870 mV. Compared to that of the well-known WS2 sensitizer, the results show that the performance of the ssDSS

SUBMITTER: Liu P 

PROVIDER: S-EPMC6640992 | biostudies-literature | 2017 May

REPOSITORIES: biostudies-literature