Tail states recombination limit of the open circuit voltage in bulk heterojunction organic solar cells

2012 ◽  
Vol 13 (2) ◽  
pp. 230-234 ◽  
Author(s):  
Ling Li ◽  
Jang Hyuk Kwon ◽  
Jin Jang
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Open Circuit Voltage ◽  
Bulk Heterojunction ◽  
Open Circuit

Open circuit voltage of stacked bulk heterojunction organic solar cells

2006 ◽  
Vol 88 (7) ◽  
pp. 073514 ◽  
Author(s):  
Kenji Kawano ◽  
Norihiro Ito ◽  
Taisuke Nishimori ◽  
Jun Sakai
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Open Circuit Voltage ◽  
Bulk Heterojunction ◽  
Open Circuit

Substituent effects in magnesium tetraethynylporphyrin with two diketopyrrolopyrrole units for bulk heterojunction organic solar cells

2017 ◽  
Vol 5 (44) ◽  
pp. 23067-23077 ◽  
Author(s):  
Keisuke Ogumi ◽  
Takafumi Nakagawa ◽  
Hiroshi Okada ◽  
Ryohei Sakai ◽  
Huan Wang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Organic Solar Cells ◽  
Open Circuit Voltage ◽  
Bulk Heterojunction ◽  
Power Conversion ◽  
Substituent Effects ◽  
Open Circuit ◽  
Donor Acceptor

Acceptor–donor–acceptor conjugated magnesium porphyrins showed a power conversion efficiency of 5.73%, high open-circuit voltage of 0.79 V, or an extended incident photon-to-current conversion efficiency spectrum to 1100 nm, depending on the substituents.

Origin of the Tunable Open-Circuit Voltage in Ternary Blend Bulk Heterojunction Organic Solar Cells

2013 ◽  
Vol 135 (3) ◽  
pp. 986-989 ◽  
Author(s):  
Robert A. Street ◽  
Daniel Davies ◽  
Petr P. Khlyabich ◽  
Beate Burkhart ◽  
Barry C. Thompson
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Open Circuit Voltage ◽  
Bulk Heterojunction ◽  
Open Circuit ◽  
Ternary Blend

Diindeno[1,2-g:1′,2′-s]rubicene: all-carbon non-fullerene electron acceptor for efficient bulk-heterojunction organic solar cells with high open-circuit voltage

RSC Advances ◽  
2015 ◽  
Vol 5 (5) ◽  
pp. 3381-3385 ◽  
Author(s):  
Hung-Yang Chen ◽  
Jan Golder ◽  
Shih-Chieh Yeh ◽  
Chiao-Wen Lin ◽  
Chao-Tsen Chen ◽  
...  
Keyword(s):  
Solar Cells ◽  
Electron Acceptor ◽  
Organic Solar Cells ◽  
Open Circuit Voltage ◽  
Bulk Heterojunction ◽  
Open Circuit

An all carbon non-fullerene electron acceptor material based on diindeno[1,2-g:1′,2′-s]rubicene (DIR) was readily synthesized and processed for bulk-heterojunction organic solar cells.

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%.

High open circuit voltage organic solar cells based upon fullerene free bulk heterojunction active layers

2014 ◽  
Vol 92 (10) ◽  
pp. 932-939 ◽  
Author(s):  
Ala’a F. Eftaiha ◽  
Jon-Paul Sun ◽  
Arthur D. Hendsbee ◽  
Casper Macaulay ◽  
Ian G. Hill ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Open Circuit Voltage ◽  
Field Effect Transistors ◽  
Bulk Heterojunction ◽  
Energy Levels ◽  
Open Circuit ◽  
Frontier Molecular Orbital ◽  
Orbital Energy ◽  
High Electron

We have recently reported on a small organic molecule containing a bithiophene core with end-capping phthalimide units (PthTh2Pth) that exhibited a H-aggregation tendency in the solid state and high electron mobility in organic field effect transistors. In this contribution, we have studied both the physical and electrical properties of poly(3-hexylthiophene) (P3HT) and PthTh2Pth thin films by measuring the optical absorption, Frontier molecular orbital energy levels, photoluminescence quenching, thermal properties, and photovoltaic response. Our results have provided a useful insight into the use of PthTh2Pth as an electron acceptor material for organic photovoltaic applications. In comparison with high-performance, fullerene-based, solution-processed bulk heterojunction solar cells reported in the literature, a relatively high open circuit voltage (∼0.94 V) was obtained for various donor–acceptor blend ratios. These results highlight the potential for PthTh2Pth to act as an alternative to fullerenes as acceptors in organic solar cell devices.

Novel perylene diimide acceptor for nonfullerene organic solar cells

2019 ◽  
Vol 12 (03) ◽  
pp. 1950022 ◽  
Author(s):  
Yuming Liang ◽  
Ping Deng ◽  
Zhongtao Wang ◽  
Zhiyong Guo ◽  
Yanlian Lei
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Fill Factor ◽  
Open Circuit Voltage ◽  
Bulk Heterojunction ◽  
Power Conversion ◽  
Photovoltaic Cells ◽  
Open Circuit ◽  
Perylene Diimide ◽  
Organic Photovoltaic

Nonfullerene electron acceptor materials have gained enormous attention due to their potential as replacements of fullerene electron acceptors in bulk heterojunction organic solar cells. A novel thiophene bridged selenophene-containing perylene diimide acceptor PDISe-T has been synthesized and applied as an acceptor in nonfullerene organic photovoltaic cells. The inverted organic photovoltaic (OPV) solar cells based on PDISe-T:PBT7-Th (acceptor:donor) blends give a power conversion efficiency (PCE) value of 2.53% with an open-circuit voltage ([Formula: see text] of 0.92[Formula: see text]V, a [Formula: see text] of 6.55[Formula: see text]mA[Formula: see text]cm[Formula: see text], and a fill factor (FF) of 0.42.

Temperature dependence of HOMO-LUMO levels and open circuit voltage for P3HT:PCBM organic solar cells

2011 ◽  
Vol 1360 ◽  
Author(s):  
Yang Shen ◽  
Louis Scudiero ◽  
Mool C. Gupta
Keyword(s):  
Solar Cells ◽  
Energy Level ◽  
Temperature Dependence ◽  
Organic Solar Cells ◽  
Photoelectron Spectroscopy ◽  
Open Circuit Voltage ◽  
Bulk Heterojunction ◽  
Acid Methyl Ester ◽  
Open Circuit ◽  
Temperature Range

ABSTRACTIn this study, the open circuit voltage (VOC) of poly (3-hexylthiophene-2,5-diyl) (P3HT) and [6,6]-phenyl C61-butyric acid methyl ester (PCBM) bulk heterojunction (BHJ) organic solar cells was measured at temperatures ranging from 300 K to 400 K. The temperature dependence of the vacuum shift and of the highest occupied molecular orbital (HOMO) energy level of P3HT and PCBM were measured by ultraviolet photoelectron spectroscopy (UPS) in the same temperature range. The temperature dependence of the absorption edge was also studied in the same temperature range to obtain the temperature variation of the optical band gap energy (Eg). The measured VOC of the devices showed a clear decreasing trend with increasing operating temperature and the total decrease was found to be about 0.1 V. Although the origin of VOC is still not fully understood it is generally believed that the energy level offset between the HOMO of the donor and the LUMO of the acceptor minus the exciton binding energy (0.3 eV) directly determines the value of VOC. However, by utilizing the measured values of the HOMO for the P3HT (donor) and of the LUMO for the PCBM (acceptor), we have found that the calculated values of VOC and its temperature dependence do not agree with the measured VOC values. This indicates that factors other than the offset between the HOMO of the donor and the LUMO of the acceptor materials are impacting VOC.

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