Influence of linker molecules on interfacial electron transfer and photovoltaic performance of quantum dot sensitized solar cells

Abstract

The influence of linker molecules on the electron transfer rate and photovoltaic performance of the resultant QDSCs has been investigated.

Electrodeposited cobalt-copper sulfide counter electrodes for highly efficient quantum dot sensitized solar cells

“…This could in principle, lead to the construction of single junction QDSSCs devices, which surpass the Shockley-Queisser 33% limit in the efficiency [3]. After several years of research, the power conversion efficiency of quantum dot sensitized solar cells has been improved to 4-6% [4][5][6][7][8][9][10][11][12][13] while higher values (5-7%) were obtained with cells based on colloidal systems [14][15][16][17][18][19][20][21][22][23], with the record of 9.28% [24]. However, besides important progress in QDSSCs, significant problems remain unsolved including relatively low open circuit potential (Voc) and fill factor (FF) values.…”

Mercaptophosphonic acids as efficient linkers in quantum dot sensitized solar cells

“…Colloidal QDs allow for tailored surface engineering and narrow size distribution, in addition they have the advantage of reproducible synthesis, which can be separated from the solar cell fabrication process. 22,[24][25][26][27] It is generally expected that the shortest linker binding QDs to NMOs results in better electron injection as the distance necessary for electron tunnelling is smaller. Thus, the preparation of QDs can be improved independently before supplying QD inks with optimal properties ready for deposition in the cell.…”

Uncovering the charge transfer and recombination mechanism in ZnS-coated PbS quantum dot sensitized solar cells

“…An improved transient grating technique has proved to be a useful method to investigate the relaxation of carriers or excited species in various materials (Katayama et al, 2003;Yang et al, 2014). Fig.…”

“…All tested samples showed negligible photo-damage during the TG measurements. The detailed principle of the improved TG technique can be found in our previous literature (Gonzalez-Pedro et al, 2013;Guijarro et al, 2011;Shen et al, 2010aShen et al, , 2008aShen et al, , 2005Yang et al, 2014).…”