Organic photovoltaic module development with inverted device structure

2015 ◽  
Vol 1737 ◽  
Author(s):  
Shigehiko Mori ◽  
Haruhi Oh-oka ◽  
Hideyuki Nakao ◽  
Takeshi Gotanda ◽  
Yoshihiko Nakano ◽  
...  
Keyword(s):  
Electrical Power ◽  
Organic Photovoltaic ◽  
Thickness Variation ◽  
Photovoltaic Module ◽  
Device Structure ◽  
Solar Cell Efficiency ◽  
Cell Efficiency ◽  
Module Design ◽  
Coating Method ◽  
Module Development

ABSTRACTThe power conversion efficiency (PCE) of organic photovoltaic (OPV) modules with 9.5% (25 cm2) and 8.7% (802 cm2) have been demonstrated. This PCE of the module exceeded our previous world records of 8.5% (25 cm2) and 6.8% (396 cm2) that were listed in the latest Solar Cell Efficiency Tables ver.43 [1]. Both module design and coating/patterning technique were consistently studied for module development. In order to achieve highly efficient modules, we increased the ratio of photo-active area to designated illumination area to 94% without any scribing process and placed insulating layers in order to decrease the leakage current. The meniscus coating method was used for the fabrication of both buffer and photoactive layers. This technique ensures the fabrication of uniform and nanometer order thickness layers with thickness variation less than 3%. Furthermore, the PCE of the OPV under indoor illumination was found to be higher than that of the conventional Si type solar cells. This indicates that OPVs are promising as electrical power supplies for indoor applications. Therefore, we have also developed several prototypes for electronics integrated photovoltaics (EIPV) such as electrical shelf labels and wireless sensors embedded with our OPV modules, which can be operated by indoor lights.

Electrical power loss model for large-area monolithic organic photovoltaic module

2011 ◽  
Vol 11 (1) ◽  
pp. S166-S170 ◽  
Author(s):  
Hong-kun Lyu ◽  
Seonju Jeong ◽  
Jun Hyoung Sim ◽  
Sungho Woo ◽  
Kang-Pil Kim ◽  
...  
Keyword(s):  
Power Loss ◽  
Electrical Power ◽  
Organic Photovoltaic ◽  
Photovoltaic Module ◽  
Large Area ◽  
Loss Model

scholarly journals A Simplified Model for the Estimation of Solar Cell Efficiency Based on the Air Mass Effect

2019 ◽  
Vol 3 (1) ◽  
pp. 199
Author(s):  
Hussein Al-Taani ◽  
Mohammad Al-Addous ◽  
Zakariya Dalalah ◽  
Aiman Albatayneh ◽  
Nabil Ayoub
Keyword(s):  
Power Efficiency ◽  
Energy Gap ◽  
Electrical Power ◽  
Mass Effect ◽  
Gap Effect ◽  
Simplified Model ◽  
Air Mass ◽  
Solar Cell Efficiency ◽  
Cell Efficiency ◽  
Radiation Distribution

In this manuscript, a model for approximating the electrical power efficiency of the solar cells in relation with the air mass effect has been presented based on simple physical assumptions and in accordance with the solar radiation distribution. The model has been developed in correspondence with the air mass effect on the radiation intensity and wavelength and taking into account the energy gap effect of the silicon material.

Fabrication of Ag Particle with Spin Coating Method for Plasmonic Enhanced Solar Cell Efficiency

2019 ◽  
Vol 35 (25) ◽  
pp. 161-166 ◽  
Author(s):  
Shich-Chuan Wu ◽  
Wen-Hsien Huang ◽  
Yen-Yu Chen ◽  
Jia-Min Shieh
Keyword(s):  
Solar Cell ◽  
Spin Coating ◽  
Solar Cell Efficiency ◽  
Spin Coating Method ◽  
Cell Efficiency ◽  
Coating Method ◽  
Ag Particle

The Limits to Organic Photovoltaic Cell Efficiency

MRS Bulletin ◽  
2005 ◽  
Vol 30 (1) ◽  
pp. 28-32 ◽  
Author(s):  
Stephen R. Forrest
Keyword(s):  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Organic Solar Cell ◽  
Power Conversion ◽  
Photovoltaic Cell ◽  
Organic Photovoltaic ◽  
Bulk Heterojunctions ◽  
Fundamental Limits ◽  
Solar Cell Efficiency ◽  
Cell Efficiency

AbstractWe consider the fundamental limits to organic solar cell efficiency, and the schemes that have been used to overcome many of these limitations. In particular, the use of double and bulk heterojunctions, as well as tandem cells employing materials with high exciton diffusion lengths, is discussed.We show that in the last few years, a combination of strategies has led to a power conversion efficiency of ηp = 5.7% (under AM 1.5 G simulated solar radiation at 1 sun intensity) for tandem cells based on small-molecularweight materials, suggesting that even higher efficiencies are possible.We conclude by considering the ultimate power conversion efficiency that is expected from organic thinfilm solar cells.

scholarly journals Fabrication of Cu2ZnSnS4 (CZTS) Nanoparticle Inks for Growth of CZTS Films for Solar Cells

Nanomaterials ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 336 ◽  
Author(s):  
Xianfeng Zhang ◽  
Engang Fu ◽  
Yuehui Wang ◽  
Cheng Zhang
Keyword(s):  
Short Circuit ◽  
Annealed Film ◽  
Short Circuit Current ◽  
Open Circuit ◽  
Secondary Phases ◽  
Solar Cell Efficiency ◽  
Cell Efficiency ◽  
Coating Method ◽  
Milling Method ◽  
Nanocrystal Inks

Cu2ZnSnS4 (CZTS) is a promising candidate material for photovoltaic applications; hence, ecofriendly methods are required to fabricate CZTS films. In this work, we fabricated CZTS nanocrystal inks by a wet ball milling method, with the use of only nontoxic solvents, followed by filtration. We performed centrifugation to screen the as-milled CZTS and obtain nanocrystals. The distribution of CZTS nanoparticles during centrifugation was examined and nanocrystal inks were obtained after the final centrifugal treatment. The as-fabricated CZTS nanocrystal inks were used to deposit CZTS precursors with precisely controlled CZTS films by a spin-coating method followed by a rapid high pressure sulfur annealing method. Both the grain growth and crystallinity of the CZTS films were promoted and the composition was adjusted from S poor to S-rich by the annealing. XRD and Raman characterization showed no secondary phases in the annealed film, the absence of the detrimental phases. A solar cell efficiency of 6.2% (open circuit voltage: Voc = 633.3 mV, short circuit current: Jsc = 17.6 mA/cm2, and fill factor: FF = 55.8%) with an area of 0.2 cm2 was achieved based on the annealed CZTS film as the absorber layer.

Advanced Local Quality Assessment of Monocrystalline Silicon Solar Cell Efficiency

2011 ◽  
Vol 465 ◽  
pp. 239-242
Author(s):  
Pavel Škarvada ◽  
Lubomír Grmela ◽  
Pavel Tománek
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Quality Assessment ◽  
Near Field ◽  
Electrical Power ◽  
Solar Cell Efficiency ◽  
Cell Efficiency ◽  
Defect Area ◽  
Local Quality

Solar cells, or photovoltaic cells, are used to convert sunlight into electrical power. The defects or imperfections in silicon solar cells lower the light-current conversion and consequently also an efficiency of the device. These defects in the semiconductor structure are normally detected by electric measurements. The thermal dependency of breakdown voltage is positive and the defects can be revealed by surface inhomogenity. To ensure a higher quality of the solar cells, advanced local quality assessment is provided and experimental results of solar cell defect measurement in microscale region are presented. Using Near-field optical beam induced current and voltage method, both current and voltage in defect area were detected and individual defects were localized with higher spatial resolution. This measurement also verifies that in reverse biased electroluminescence spots the quantum efficiency is lower and so these spots affect overall quality of the cell.

Experimental and Theoretical Comparable Study of Pure and Zinc Porphyrin Surface Modified ZnO Nanorod Arrays for Hybrid Solar Cell Applications

2020 ◽  
pp. 114-119
Keyword(s):  
Solar Cell ◽  
Electrochemical Impedance ◽  
Hybrid Solar Cell ◽  
Cell Performance ◽  
Solar Cell Performance ◽  
Solar Cell Efficiency ◽  
Cell Efficiency ◽  
Annealing Effects ◽  
Vertically Aligned ◽  
Surface Modified

Experimental and theoretical study Porphyrin-grafted ZnO nanowire arrays were investigated for organic/inorganic hybrid solar cell applications. Two types of porphyrin – Tetra (4-carboxyphenyle) TCPP and meso-Tetraphenylporphine (Zinc-TPP)were used to modify the nanowire surfaces. The vertically aligned nanowires with porphyrin modifications were embedded in graphene-enriched poly (3-hexylthiophene) [G-P3HT] for p-n junction nanowire solar cells. Surface grafting of ZnO nanowires was found to improve the solar cell efficiency. There are different effect for the two types of porphyrin as results of Zn existing. Annealing effects on the solar cell performance were investigated by heating the devices up to 225 °C in air. It was found that the cell performance was significantly degraded after annealing. The degradation was attributed to the polymer structural change at high temperature as evidenced by electrochemical impedance spectroscopy measurements.

Solar cell efficiency tables (Version 58)

2021 ◽  
Author(s):  
Martin A. Green ◽  
Ewan D. Dunlop ◽  
Jochen Hohl‐Ebinger ◽  
Masahiro Yoshita ◽  
Nikos Kopidakis ◽  
...  
Keyword(s):  
Solar Cell ◽  
Solar Cell Efficiency ◽  
Cell Efficiency
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