Thickness Dependent Effects of Thermal Annealing and Solvent Vapor Treatment of Poly (3-hexylthiophene) and Fullerene Bulk Heterojunction Photovoltaics

2008 ◽  
Vol 1123 ◽  
Author(s):  
Zhouying Zhao ◽  
Lynn Rice ◽  
Harry Efstathiadis ◽  
Pradeep Haldar
Keyword(s):  
Power Conversion Efficiency ◽  
Layer Thickness ◽  
Thermal Annealing ◽  
Active Layer ◽  
Conversion Efficiency ◽  
Bulk Heterojunction ◽  
Power Conversion ◽  
Active Layer Thickness ◽  
Solvent Vapor ◽  
Vapor Treatment

AbstractWe have utilized room-temperature solvent vapor treatment followed by thermal annealing to process bulk heterojunction (BHJ) photovoltaic devices based on blends of poly (3-hexylthiophene) (P3HT) and phenyl-C61-butyric acid methyl ester (PCBM) of varied active layer thickness. The morphological and photovoltaic performance characteristics of the cells subject to these treatments were found to be dependent on active layer thickness. The devices were characterized using atomic force microscopy (AFM) and opto-electrical and external quantum efficiency measurements in order to analyze the mechanism underlying the observed trend. Performance indicators including fill factor, short-circuit current and power conversion efficiency were correlated to the ordering of device active layers and morphology. The maximum power conversion efficiency achieved was 4.1 %.

Engineering Polymer Solar Cells: Advancement in Active Layer Thickness and Morphology

2021 ◽  
Author(s):  
Ritesh Kant Gupta ◽  
Rabindranath Garai ◽  
Maimur Hossain ◽  
Mohammad Adil Afroz ◽  
Dibashmoni Kalita ◽  
...  
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Layer Thickness ◽  
Active Layer ◽  
Conversion Efficiency ◽  
High Power ◽  
Polymer Solar Cells ◽  
Power Conversion ◽  
Active Layer Thickness ◽  
High Power Conversion Efficiency

Achieving high power conversion efficiency (PCE) polymer solar cells (PSCs) has been very challenging and the ultimate goal for their commercialization. Precise investigation of the active layer morphology and newer...

Effect of Thermal Annealing on the Power Conversion Efficiency of CuO-Bulk Heterojunction P3HT/ PC70BM Solar Cells

2015 ◽  
Vol 3 (2) ◽  
pp. 107-126
Author(s):  
Aruna P. Wanninayake ◽  
Subhashini Gunashekar ◽  
Shengyi Li ◽  
Benjamin C. Church ◽  
Nidal Abu-Zahra
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Thermal Annealing ◽  
Conversion Efficiency ◽  
Bulk Heterojunction ◽  
Power Conversion

Effects of Inserting Highly Polar Salts Between the Cathode and Active Layer of Bulk Heterojunction Photovoltaic Devices

2001 ◽  
Vol 665 ◽  
Author(s):  
Sean E. Shaheen ◽  
Christoph J. Brabec ◽  
N. Serdar Sariciftci ◽  
Ghassan E. Jabbour
Keyword(s):  
Dipole Moment ◽  
Power Conversion Efficiency ◽  
Active Layer ◽  
Conversion Efficiency ◽  
Bulk Heterojunction ◽  
Power Conversion ◽  
Device Performance ◽  
Photovoltaic Devices ◽  
Thermal Deposition

ABSTRACTThermal deposition of small amounts of various salts at the interface between the active layer and the aluminum cathode was shown to alter the performance of bulk heterojunction photovoltaic devices. LiF and LiBr were found to enhance the power conversion efficiency as compared to devices with no interfacial salt, but Cs and K compounds were found to severely diminish the device performance. It is suggested that the Li compounds preferentially align to produce a bulk dipole moment at the interface, whereas the Cs and K compounds do not.

Bulk heterojunction organic solar cells based on carbazole–BODIPY conjugate small molecules as donors with high open circuit voltage

2015 ◽  
Vol 17 (40) ◽  
pp. 26580-26588 ◽  
Author(s):  
Thaksen Jadhav ◽  
Rajneesh Misra ◽  
S. Biswas ◽  
Ganesh D. Sharma
Keyword(s):  
Solar Cells ◽  
Small Molecules ◽  
Power Conversion Efficiency ◽  
Active Layer ◽  
Conversion Efficiency ◽  
Organic Solar Cells ◽  
Open Circuit Voltage ◽  
Bulk Heterojunction ◽  
Power Conversion ◽  
Open Circuit

The power conversion efficiency of an optimized3a:PC71BM active layer based device is 5.05%.

Effect of active layer thickness on opto-electronic characteristics of porphyrin-fullerene photovoltaic cell

2012 ◽  
Vol 16 (09) ◽  
pp. 1059-1067 ◽  
Author(s):  
Shahid M. Khan ◽  
Muhammad H. Sayyad
Keyword(s):  
Layer Thickness ◽  
Active Layer ◽  
Conversion Efficiency ◽  
Bulk Heterojunction ◽  
Photovoltaic Cells ◽  
Solar Spectrum ◽  
Photovoltaic Cell ◽  
Active Layer Thickness ◽  
Spin Speed ◽  
Average Grain Size

The opto-electronic characteristics of porphyrin-fullerene bulk heterojunction photovoltaic cells of different active layer thicknesses were studied. In order to achieve different active layer thicknesses, the photovoltaic cells were prepared by spin coating the active layer of each cell at a different spin speed. To determine the active layer thickness, average of absorption coefficients of the materials constituting the active layer was used along with the optical density. Active layer thicknesses were also measured by using surface profilometer. Atomic force microscope surface scans revealed that there was no considerable change in active layer surface roughness from 1000 to 1500 rpm. However, a decrease in average grain size with increasing spin speed was observed. Current density as a function of voltage curves at different active layer thicknesses were recorded in dark and under a simulated solar spectrum AM 1.5G (100 mW.cm-2). Incident photon-to-current conversion efficiency spectra at different active layer thicknesses were also determined. The solar cell having active layer thickness of 68 nm (spin coated at 1200 rpm) showed optimum results. The power conversion efficiency of the photovoltaic cell at this thickness was 0.24%.

Pyridine-functionalized fullerene additive enabling coordination interactions with CH3NH3PbI3 perovskite towards highly efficient bulk heterojunction solar cells

2019 ◽  
Vol 7 (6) ◽  
pp. 2754-2763 ◽  
Author(s):  
Jieming Zhen ◽  
Weiran Zhou ◽  
Muqing Chen ◽  
Bairu Li ◽  
Lingbo Jia ◽  
...  
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Bulk Heterojunction ◽  
Power Conversion ◽  
Fullerene Derivative ◽  
Heterojunction Solar Cells ◽  
Bulk Heterojunction Solar Cells ◽  
Highly Efficient

A novel pyridine-functionalized fullerene derivative (C60-PyP) as an additive in regular bulk heterojunction perovskite (CH3NH3Pbl3) solar cells (PSCs) enables a power conversion efficiency of 19.82% with markedly suppressed hysteresis.

Sign in / Sign up

Export Citation Format

Share Document