scholarly journals Graphene and transition metal dichalcogenide nanosheets as charge transport layers for solution processed solar cells

2016 ◽  
Vol 19 (10) ◽  
pp. 580-594 ◽  
Author(s):  
Nikolaos Balis ◽  
Emmanuel Stratakis ◽  
Emmanuel Kymakis
Keyword(s):  
Solar Cells ◽  
Transition Metal ◽  
Charge Transport ◽  
Transition Metal Dichalcogenide ◽  
Solution Processed

Efficient solution-processed small-molecule solar cells by insertion of graphene quantum dots

Nanoscale ◽  
2014 ◽  
Vol 6 (24) ◽  
pp. 15175-15180 ◽  
Author(s):  
Dong Hwan Wang ◽  
Jung Kyu Kim ◽  
Sang Jin Kim ◽  
Byung Hee Hong ◽  
Jong Hyeok Park
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Surface Morphology ◽  
Charge Transport ◽  
Small Molecule ◽  
Efficient Solution ◽  
Fill Factor ◽  
Graphene Quantum Dots ◽  
Effective Surface ◽  
Solution Processed

Solution-processed small-molecule solar cells are demonstrated by insertion of graphene quantum dots (GQDs). The GQDs play an important role in increasing current density and fill factor which correlate with improved EQE and effective surface morphology. The multiple scattering and a reduced charge transport resistance lead to enhanced performances.

Effects of Transition Metal Dichalcogenide Molybdenum Disulfide Layer Formation in Copper–Zinc–Tin–Sulfur Solar Cells from Numerical Analysis

2012 ◽  
Vol 51 ◽  
pp. 10NC32 ◽  
Author(s):  
Puvaneswaran Chelvanathan ◽  
Mohammad Istiaque Hossain ◽  
Jamilah Husna ◽  
Mohammad Alghoul ◽  
Kamaruzzaman Sopian ◽  
...  
Keyword(s):  
Solar Cells ◽  
Numerical Analysis ◽  
Transition Metal ◽  
Molybdenum Disulfide ◽  
Transition Metal Dichalcogenide ◽  
Layer Formation ◽  
Copper Zinc

Understanding the poor fill factor of solution-processed squaraine based solar cells in terms of charge carrier dynamics probed via impedance and transient spectroscopy

2020 ◽  
Vol 8 (42) ◽  
pp. 14748-14756
Author(s):  
Anitha B. ◽  
Vijith K. P. ◽  
Akhil Alexander ◽  
Varun Srivastava ◽  
Manoj A. G. Namboothiry
Keyword(s):  
Solar Cells ◽  
Charge Carrier ◽  
Charge Transport ◽  
Fill Factor ◽  
Carrier Dynamics ◽  
Solution Processed ◽  
Charge Carrier Dynamics ◽  
The Poor ◽  
Transient Spectroscopy

Poor charge transport and extraction along with trap-assisted recombination limit the fill factor of solution processed SQ:PCBM solar cells.

scholarly journals High-specific-power flexible transition metal dichalcogenide solar cells

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Koosha Nassiri Nazif ◽  
Alwin Daus ◽  
Jiho Hong ◽  
Nayeun Lee ◽  
Sam Vaziri ◽  
...  
Keyword(s):  
Solar Cells ◽  
Transition Metal ◽  
Fermi Level ◽  
Transition Metal Dichalcogenides ◽  
Specific Power ◽  
Transition Metal Dichalcogenide ◽  
Fermi Level Pinning ◽  
High Specific Power ◽  
Metal Dichalcogenides ◽  
Transfer Method

AbstractSemiconducting transition metal dichalcogenides (TMDs) are promising for flexible high-specific-power photovoltaics due to their ultrahigh optical absorption coefficients, desirable band gaps and self-passivated surfaces. However, challenges such as Fermi-level pinning at the metal contact–TMD interface and the inapplicability of traditional doping schemes have prevented most TMD solar cells from exceeding 2% power conversion efficiency (PCE). In addition, fabrication on flexible substrates tends to contaminate or damage TMD interfaces, further reducing performance. Here, we address these fundamental issues by employing: (1) transparent graphene contacts to mitigate Fermi-level pinning, (2) MoOx capping for doping, passivation and anti-reflection, and (3) a clean, non-damaging direct transfer method to realize devices on lightweight flexible polyimide substrates. These lead to record PCE of 5.1% and record specific power of 4.4 W g−1 for flexible TMD (WSe2) solar cells, the latter on par with prevailing thin-film solar technologies cadmium telluride, copper indium gallium selenide, amorphous silicon and III-Vs. We further project that TMD solar cells could achieve specific power up to 46 W g−1, creating unprecedented opportunities in a broad range of industries from aerospace to wearable and implantable electronics.

Nongeminate Recombination and Charge Transport Limitations in Diketopyrrolopyrrole-Based Solution-Processed Small Molecule Solar Cells

2013 ◽  
Vol 23 (28) ◽  
pp. 3584-3594 ◽  
Author(s):  
Christopher M. Proctor ◽  
Chunki Kim ◽  
Dieter Neher ◽  
Thuc-Quyen Nguyen
Keyword(s):  
Solar Cells ◽  
Charge Transport ◽  
Small Molecule ◽  
Solution Processed
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