AgInS₂/CdSe type-II core/shell quantum dot-sensitized solar cells with an efficiency of 11.75% under 0.1 sun

Abstract

We report the fabrication and photovoltaic performance of new type-II AgInS2/CdSe core/shell quantum dot-sensitized solar cells (QDSSCs).

Highly Efficient CdSe Quantum Dot-Sensitized Solar Cells via a Facile SILAR Method: Dependence of the SILAR Cycles on Optical Properties and Photovoltaic Performance

“…The photoelectrode, outlined in our earlier publications [15][16][17], comprised a TiO 2 structure on an FTO glass substrate organized into three layers. Initially, a TiO 2 blocking layer was created by spin-coating 50 μl of a 0.247 M titanium tetraisopropoxide (TTIP) solution onto a pre-cleaned FTO glass surface.…”

“…The CuS counter electrode was fabricated using the chemical bath deposition (CBD) method [18]. The polysulfide electrolyte [15,16] was applied between the CdSe photoelectrode and the CuS counter electrode prior to performing photocurrent-voltage (J-V) measurements. The analyses comprised Xray diffractometer (XRD) assessment, UV−Vis spectrophotometer measurements for optical spectra, and J-V tests, following the methodology detailed in our earlier reports [15,16].…”

g-C3N4@TiO2 photoanodes for high-efficiency QDSSCs: improved electron transfer and photochemical stability

“…8 The advantages of simple preparation, multi-exciton effects, an adjustable light absorption range and environmental friendliness make QDSSCs the focus of current research and application. 7,9–13 In previous studies, researchers have continuously improved cell performance by optimizing the counter electrodes, 14 quantum dots 15 and electrolytes 16 of QDSSCs, which has increased their photoelectric conversion efficiency (PCE) value from less than 1% at the beginning to 16.1% 17–21 at present. Although significant progress has been made in the research of QDSSCs, there is still a large room for improvement in the distance from a theoretical PCE value of 44%.…”

Cu-mediated broadening of the absorption band of quaternary Cu–Ag–In–S/CdSe type-II core/shell quantum dot-sensitized solar cells with an efficiency of 12.51% under 0.25 sun

“…The highest PCEs among all reported type-II core/shell QDSSCs are in CdTe@Dy-Doped CdS/CdSe (8.85%) 29 and AgInS 2 /CdSe (8.39%). 30…”

“…Given the successful demonstration of AgInS 2 solar cells, it is worth exploring the possibility of employing AgInS 2 to construct core/shell QDs for solar cells. Recently, we demonstrated type-II AgInS 2 /CdSe core/shell QDSSCs, 30 using AgInS 2 as the core and CdSe as the shell material. CdSe has a bandgap of 1.7 eV and, therefore, is suitable for a solar absorber.…”