Finding the Lost Open-Circuit Voltage in Polymer Solar Cells by UV-Ozone Treatment of the Nickel Acetate Anode Buffer Layer

2014 ◽  
Vol 6 (12) ◽  
pp. 9458-9465 ◽  
Author(s):  
Fuzhi Wang ◽  
Gang Sun ◽  
Cong Li ◽  
Jiyan Liu ◽  
Siqian Hu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Buffer Layer ◽  
Open Circuit Voltage ◽  
Polymer Solar Cells ◽  
Open Circuit ◽  
Nickel Acetate ◽  
Ozone Treatment ◽  
Anode Buffer Layer ◽  
Uv Ozone

scholarly journals UV-Ozone Treatment on Cs2CO3Interfacial Layer for the Improvement of Inverted Polymer Solar Cells

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Yusheng Xin ◽  
Zixuan Wang ◽  
Lu Xu ◽  
Xiaowei Xu ◽  
Yang Liu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Indium Tin Oxide ◽  
Treatment Time ◽  
Polymer Solar Cells ◽  
Short Circuit ◽  
Annealing Treatment ◽  
Open Circuit ◽  
Ozone Treatment ◽  
Shunt Resistance ◽  
Uv Ozone

Inverted configuration polymer solar cells (IPSCs) were prepared by using Cs2CO3modified indium tin oxide (ITO) substrates as cathode and MoO3/Al as anode, ITO/Cs2CO3/P3HT:PCBM/MoO3/Al. The interfacial Cs2CO3layers were conducted with annealing treatment and different time UV-Ozone treatment. The power conversion efficiency (PCE) of IPSCs was improved to 1% when the UV-Ozone treatment time is 15 minutes, with the open-circuit voltage of 0.48 V, short-circuit current density of 5.4 mA/cm2, and fill factor of 39%. The improvement of IPSCs should be attributed to the increased electron transporting and collection ability of Cs2CO3layer induced by UV-Ozone treatment. The underlying mechanism of PCE improvement was discussed in terms of series and shunt resistance of cells induced by UV-Ozone treatment on Cs2CO3layer, and the mole ratio of Cs to O of Cs2CO3layer with different UV-Ozone treatment was investigated by scanning electron microscopy operating in the mode for in situ energy dispersive X-ray (EDX) spectra.

scholarly journals Ultrathin Anode Buffer Layer for Enhancing Performance of Polymer Solar Cells

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Dun Wang ◽  
Jian Wang ◽  
Ling-liang Li ◽  
Qiao-shi An ◽  
Hui Huang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Buffer Layer ◽  
Polymer Solar Cells ◽  
Short Circuit ◽  
Acid Methyl Ester ◽  
Open Circuit ◽  
Buffer Layers ◽  
Simulated Solar Light ◽  
Anode Buffer Layer ◽  
Circuit Density

A series of polymer solar cells (PSCs) based on poly[(4,8-bis-(2-ethylhexyloxy)-benzo[1,2-b:4,5-b′(dithiophene)-2,6-diyl-alt-(4-(2-ethylhexanoyl)-thieno[3,4-b]thiophene)-2,6-diyl] (PBDTTT-C) and [6,6]phenyl-C71-butyric acid methyl ester (PC71BM) were fabricated with various anode buffer layers. The power conversion efficiency (PCE) of PSCs was improved to 4.91% for the cells with PEDOT:PSS/LiF (1 nm) as anode buffer layer, which corresponds to 26.2% efficiency improvement compared with the cells with PEDOT:PSS as anode buffer layer. The PSCs with PEDOT:PSS/LiF as anode buffer layer show a maximum short-circuit density (Jsc) of 13.70 mA/cm2, with open circuit voltage (Voc) of 0.73 V and fill factor (FF) of 49.1% under illumination 100 mW/cm2AM 1.5 G simulated solar light. The dominant mechanism for the performance improvement of PSCs could be attributed to the increased charge carrier collection ability by anode buffer layers.

Microcrystalline (Si,Ge):H Solar Cells

2003 ◽  
Vol 762 ◽  
Author(s):  
Jianhua Zhu ◽  
Vikram L. Dalal
Keyword(s):  
Solar Cells ◽  
Buffer Layer ◽  
Quantum Efficiency ◽  
Fill Factor ◽  
Open Circuit Voltage ◽  
Defect Density ◽  
Cell Structure ◽  
Open Circuit ◽  
Base Layer ◽  
Ecr Plasma

AbstractWe report on the growth and properties of microcrystalline Si:H and (Si,Ge):H solar cells on stainless steel substrates. The solar cells were grown using a remote, low pressure ECR plasma system. In order to crystallize (Si,Ge), much higher hydrogen dilution (∼40:1) had to be used compared to the case for mc-Si:H, where a dilution of 10:1 was adequate for crystallization. The solar cell structure was of the p+nn+ type, with light entering the p+ layer. It was found that it was advantageous to use a thin a-Si:H buffer layer at the back of the cells in order to reduce shunt density and improve the performance of the cells. A graded gap buffer layer was used at the p+n interface so as to improve the open-circuit voltage and fill factor. The open circuit voltage and fill factor decreased as the Ge content increased. Quantum efficiency measurements indicated that the device was indeed microcrystalline and followed the absorption characteristics of crystalline ( Si,Ge). As the Ge content increased, quantum efficiency in the infrared increased. X-ray measurements of films indicated grain sizes of ∼ 10nm. EDAX measurements were used to measure the Ge content in the films and devices. Capacitance measurements at low frequencies ( ~100 Hz and 1 kHz) indicated that the base layer was indeed behaving as a crystalline material, with classical C(V) curves. The defect density varied between 1x1016 to 2x1017/cm3, with higher defects indicated as the Ge concentration increased.

scholarly journals Subphthalocyanine‐Diketopyrrolopyrrole Conjugates: 3D Star‐Shaped Systems as Non‐Fullerene Acceptors in Polymer Solar Cells with High Open‐Circuit Voltage

ChemPlusChem ◽  
2021 ◽  
Author(s):  
Maria J. Álvaro‐Martins ◽  
José G. Sánchez ◽  
Giulia Lavarda ◽  
Desiré Molina ◽  
Josep Pallarès ◽  
...  
Keyword(s):  
Solar Cells ◽  
Open Circuit Voltage ◽  
Polymer Solar Cells ◽  
Open Circuit

scholarly journals Mechanism of Light-Soaking Effect in Inverted Polymer Solar Cells with Open-Circuit Voltage Increase

ACS Omega ◽  
2017 ◽  
Vol 2 (4) ◽  
pp. 1617-1624 ◽  
Author(s):  
Takuji Kusumi ◽  
Takayuki Kuwabara ◽  
Kyosuke Fujimori ◽  
Takumi Minami ◽  
Takahiro Yamaguchi ◽  
...  
Keyword(s):  
Solar Cells ◽  
Open Circuit Voltage ◽  
Polymer Solar Cells ◽  
Open Circuit ◽  
Inverted Polymer Solar Cells

Benzotrithiophene and benzodithiophene-based polymers for efficient polymer solar cells with high open-circuit voltage

2013 ◽  
Vol 4 (11) ◽  
pp. 3390 ◽  
Author(s):  
Guobing Zhang ◽  
Jianyu Yuan ◽  
Peng Li ◽  
Jingxuan Ma ◽  
Hongbo Lu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Open Circuit Voltage ◽  
Polymer Solar Cells ◽  
Open Circuit
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