DMSO Solution Processed Cu2ZnSnS4 Solar Cell with Open Circuit Voltage Reached 0.731 V

In the fabrication of crystalline silicon solar cells, the contact properties between the front metal electrode and silicon are one of the most important parameters for achieving high-efficiency, as it is an integral element in the formation of solar cell electrodes. This entails an increase in the surface recombination velocity and a drop in the open-circuit voltage of the solar cell; hence, controlling the recombination velocity at the metal-silicon interface becomes a critical factor in the process. In this study, the distribution of Ag crystallites formed on the silicon-metal interface, the surface recombination velocity in the silicon-metal interface and the resulting changes in the performance of the Passivated Emitter and Rear Contact (PERC) solar cells were analyzed by controlling the firing temperature. The Ag crystallite distribution gradually increased corresponding to a firing temperature increase from 850 ∘C to 950 ∘C. The surface recombination velocity at the silicon-metal interface increased from 353 to 599 cm/s and the open-circuit voltage of the PERC solar cell decreased from 659.7 to 647 mV. Technology Computer-Aided Design (TCAD) simulation was used for detailed analysis on the effect of the surface recombination velocity at the silicon-metal interface on the PERC solar cell performance. Simulations showed that the increase in the distribution of Ag crystallites and surface recombination velocity at the silicon-metal interface played an important role in the decrease of open-circuit voltage of the PERC solar cell at temperatures of 850–900 ∘C, whereas the damage caused by the emitter over fire was determined as the main cause of the voltage drop at 950 ∘C. These results are expected to serve as a steppingstone for further research on improvement in the silicon-metal interface properties of silicon-based solar cells and investigation on high-efficiency solar cells.

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The improvement of open circuit voltage by the sputtered TiO2 layer for efficient perovskite solar cell

Vacuum ◽

10.1016/j.vacuum.2016.03.013 ◽

2016 ◽

Vol 128 ◽

pp. 91-98 ◽

Cited By ~ 16

Author(s):

Sheng Ge ◽

Haitao Xu ◽

Wenzhen Wang ◽

Runan Cao ◽

Yanglin Wu ◽

...

Keyword(s):

Solar Cell ◽

Open Circuit Voltage ◽

Perovskite Solar Cell ◽

Open Circuit ◽

Tio2 Layer

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A p-Type NiO-Based Dye-Sensitized Solar Cell with an Open-Circuit Voltage of 0.35 V

Angewandte Chemie International Edition ◽

10.1002/anie.200900423 ◽

2009 ◽

Vol 48 (24) ◽

pp. 4402-4405 ◽

Cited By ~ 222

Author(s):

Elizabeth A. Gibson ◽

Amanda L. Smeigh ◽

Loïc Le Pleux ◽

Jérôme Fortage ◽

Gerrit Boschloo ◽

...

Keyword(s):

Solar Cell ◽

Open Circuit Voltage ◽

Open Circuit ◽

Dye Sensitized Solar Cell ◽

Dye Sensitized ◽

P Type

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Analysis of Losses in Open Circuit Voltage for an 18-μm Silicon Solar Cell

Applied Sciences ◽

10.3390/app5040682 ◽

2015 ◽

Vol 5 (4) ◽

pp. 682-694 ◽

Cited By ~ 6

Author(s):

Lu Wang ◽

Jianshu Han ◽

Anthony Lochtefeld ◽

Andrew Gerger ◽

Allen Barnett

Keyword(s):

Solar Cell ◽

Silicon Solar Cell ◽

Open Circuit Voltage ◽

Open Circuit

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All-Perovskite Tandem Solar Cell Showing Unprecedentedly High Open-Circuit Voltage

Joule ◽

10.1016/j.joule.2018.10.029 ◽

2018 ◽

Vol 2 (11) ◽

pp. 2206-2207 ◽

Cited By ~ 2

Author(s):

Yanfa Yan

Keyword(s):

Solar Cell ◽

Open Circuit Voltage ◽

Open Circuit ◽

Tandem Solar Cell

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Effective Light Harvesting of Tandem Polymer Solar Cell

Journal of Solar Energy Engineering ◽

10.1115/1.4001150 ◽

2010 ◽

Vol 132 (2) ◽

Cited By ~ 5

Author(s):

Yi-Chun Chen ◽

Chao-Ying Yu ◽

Chih-Ping Chen ◽

Shu-Hua Chan ◽

Ching Ting

Keyword(s):

Solar Cell ◽

Molecular Orbital ◽

Open Circuit Voltage ◽

Polymer Solar Cell ◽

Short Circuit ◽

Active Material ◽

Weight Ratio ◽

Acid Methyl Ester ◽

Open Circuit ◽

Ito Glass

A novel soluble conjugated polymers, P2, with coplanar thiophene-phenylene-thiophene unit is designed and synthesized as suitable active material used in tandem cells to compensate the poly(3-hexylthiophene) (P3HT)/[6,6]-phenyl-C71 butyric acid methyl ester (PC71BM) bulk-heterojunction cell in this paper. P2 polymer bears advantages in both low optical bandgap (1.7 eV) and high hole mobility properties (3.4×10−3 cm2/V-s from field-effect transistor measurement). Furthermore, the electrochemical studies of P2 indicate desirable highest occupied molecular orbital/lowest unoccupied molecular orbital (HOMO/LUMO) band structure that enables a high open circuit voltage when pairing with PCBM acceptor. The best power conversion efficiency of this polymer solar cell thus far based on P2/PC71BM system with a weight ratio of 1:3 reached 4.4% with a short circuit current density (Jsc) of 10.2 mA/cm2, an open circuit voltage (Voc) of 0.81 V, and a fill factor (FF) of 0.53 under air mass (AM) 1.5 G (100 mW/cm2). The preliminary data of the tandem cell with indium tin oxide (ITO) glass/PEDOT:PSS/P2:PC71BM/TiOx/PEDOT:PSS/P3HT:PC71BM/TiOx/Al configuration has reached Jsc of 6.2 mA/cm2, Voc of 1.33 V, FF of 0.56 and an overall efficiency of 4.6% under AM 1.5 G (100 mW/cm2).

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