Next Article in Journal
Wet Synthesis of Elongated Hexagonal ZnO Microstructures for Applications as Photo-Piezoelectric Catalysts
Previous Article in Journal
New Oral Surgery Materials for Bone Reconstruction—A Comparison of Five Bone Substitute Materials for Dentoalveolar Augmentation
Previous Article in Special Issue
Influences of Low Intensity on Diode Parameters of CdTe Solar Cells
Open AccessArticle

Toward Current Matching in Tandem Dye-Sensitized Solar Cells

Key Laboratory of Photovoltaic and Energy Conservation Materials, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China
Beijing Key Laboratory of Novel Thin-Film Solar Cells, Beijing Key Laboratory of Energy Safety and Clean Utilization, North China Electric Power University, Beijing 102206, China
Authors to whom correspondence should be addressed.
Materials 2020, 13(13), 2936;
Received: 29 May 2020 / Revised: 25 June 2020 / Accepted: 29 June 2020 / Published: 30 June 2020
(This article belongs to the Special Issue Materials for Solar Photovoltaic Applications)
The tandem pn-type dye-sensitized solar cells (pn-DSCs) have received much attention in the field of photovoltaic technologies because of their great potential to overcome the Shockley-Queisser efficiency limitation that applies to single junction photovoltaic devices. However, factors governing the short-circuit current densities (Jsc) of pn-DSC remain unclear. It is typically believed that Jsc of the pn-DSC is limited to the highest one that the two independent photoelectrodes can achieve. In this paper, however, we found that the available Jsc of pn-DSC is always determined by the larger Jsc that the photoanode can achieve but not by the smaller one in the photocathode. Such experimental findings were verified by a simplified series circuit model, which shows that a breakdown will occur on the photocathode when the photocurrent goes considerably beyond its threshold voltage, thus leading to an abrupt increase in Jsc of the circuit. The simulation results also suggest that a higher photoconversion efficiency of the pn-DSCs can be only achieved when an almost equivalent photocurrent is achieved for the two photoelectrodes. View Full-Text
Keywords: dye-sensitized solar cells; pn type tandem; circuit model; photocathode; current matching dye-sensitized solar cells; pn type tandem; circuit model; photocathode; current matching
Show Figures

Figure 1

MDPI and ACS Style

Wei, J.; Shao, Z.; Pan, B.; Chen, S.; Hu, L.; Dai, S. Toward Current Matching in Tandem Dye-Sensitized Solar Cells. Materials 2020, 13, 2936.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

Search more from Scilit
Back to TopTop