Effects of the photoactive layer properties and current transmission mechanism on optical and electrical characteristics of organic photovoltaic

Optik ◽  
2021 ◽  
pp. 166937
Author(s):  
Zakir Çaldıran ◽  
Şakir Aydoğan
Keyword(s):  
Transmission Mechanism ◽  
Organic Photovoltaic ◽  
Electrical Characteristics ◽  
Photoactive Layer ◽  
Current Transmission

scholarly journals Особенности МДП-структур с фторидом самария на кремниевых и германиевых подложках

2019 ◽  
Vol 53 (2) ◽  
pp. 241
Author(s):  
М.Б. Шалимова ◽  
Н.В. Сачук
Keyword(s):  
Electric Fields ◽  
Transmission Mechanism ◽  
Interface Traps ◽  
Power Dependence ◽  
Trap Charge ◽  
Insulator Film ◽  
Current Transmission ◽  
Capacitance Voltage ◽  
Silicon And Germanium ◽  
P Type

AbstractThe electrophysical characteristics of silicon and germanium MIS structures with an SmF_3 insulator film, as well as their degradation due to the effect of electric fields, although similar, have a number of specific features. The current-transmission mechanism in all studied structures is described by the power dependence. Interface traps form the charge of electrically active traps, which varies during capacitance–voltage measurements, and the charge of inactive traps, which remains invariable. This charge is negative on the n -Ge surface, and the corresponding charge on the n -type and p -type silicon surface is positive. The trap charge density in the bulk of samarium fluoride lies in the range from –0.2 × 10^–8 to 0.6 × 10^–8 C/cm^2 and is negligibly small when compared with the charge of interface traps in most cases.

Extrusion of a nano-ordered active layer for organic photovoltaic cells

2017 ◽  
Vol 1 (9) ◽  
pp. 2016-2027 ◽  
Author(s):  
Ali Nourdine ◽  
Lionel Flandin ◽  
Nicole Albérola ◽  
Lara Perrin ◽  
Emilie Planès ◽  
...  
Keyword(s):  
Active Layer ◽  
Photovoltaic Cells ◽  
Extrusion Process ◽  
Organic Photovoltaic ◽  
Organic Photovoltaic Cells ◽  
Photoactive Layer ◽  
First Time

For the first time, an extrusion process is used to produce a perfectly nanostructured organic photoactive layer.

scholarly journals Copper light-catching electrodes for organic photovoltaics

2017 ◽  
Vol 1 (4) ◽  
pp. 859-865 ◽  
Author(s):  
H. Jessica Pereira ◽  
Oliver S. Hutter ◽  
G. Dinesha M. R. Dabera ◽  
Luke A. Rochford ◽  
Ross. A. Hatton
Keyword(s):  
Organic Photovoltaics ◽  
Red Light ◽  
Organic Photovoltaic ◽  
Copper Films ◽  
Photovoltaic Devices ◽  
Organic Photovoltaic Devices ◽  
Photoactive Layer

Plasmon-active optically thin copper films catch red light and transfer the energy to the photoactive layer in organic photovoltaic devices.

scholarly journals Mathematical Model of Human Forearm Based Muscle Fiber Tissues’ Anisotropic Characteristics

2016 ◽  
Vol 10 (1) ◽  
pp. 234-238 ◽  
Author(s):  
Yu-Ping Qin ◽  
Shuang Zhang ◽  
Yi-he Liu
Keyword(s):  
Mathematical Model ◽  
Muscle Fiber ◽  
Communication Channel ◽  
Human Muscle ◽  
Transmission Mechanism ◽  
Muscular Tissue ◽  
Electrical Characteristics ◽  
Galvanic Coupling ◽  
Communication Signals ◽  
Human Forearm

On the basis of human muscle fiber tissues' characteristics, it is first proposed to establish the analytical model of galvanic coupling intra-body communication channel. In this model, the parallel and the transverse electrical characteristics of muscular tissue are fully considered, and the model accurately presents the transmission mechanism of galvanic coupling intra-body communication signals in the channel.

Optical and Dielectric Characteristics of Photoactive Layer Thin Films for Organic Photovoltaic Cells

2012 ◽  
Vol 217-219 ◽  
pp. 695-698
Author(s):  
S.B. Chen ◽  
Z.Y. Zhong
Keyword(s):  
Thin Films ◽  
Photovoltaic Cells ◽  
Optical Bandgap ◽  
Organic Photovoltaic ◽  
Complex Dielectric Constant ◽  
Organic Photovoltaic Cells ◽  
Device Structure ◽  
Photoactive Layer ◽  
Transmittance Spectra ◽  
Double Beam

The thin films of poly[2-methoxy-5-(2'-ethylhexyloxy)-1,4-phenylenevinylene] (MEH- PPV) used as photoactive layer in organic photovoltaic cells were prepared on glass substrates by the spin-coating technique. The transmittance spectra of thin films were measured by a double beam spectrophotometer. The optical constants such as refractive index and extinction coefficient of the thin films were determined from the measured transmittance spectra using the method of whole optical spectrum fitting. The complex dielectric constant and the complex optical conductivity of the thin films were obtained. In addition, the optical bandgap of the thin film were calculated according to the Tauc's law. The results show that the thin films exhibit direct allowed transitions and the optical bandgap is about 2.18 eV. These results provide some useful references for the design and optimization of device structure in organic photovoltaic cells.

Modeling and optimization of organic tandem photovoltaic solar cells using silver nanowires as electrode and interconnecting layer

2021 ◽  
Vol 93 (2) ◽  
pp. 20202
Author(s):  
Imen Houiji ◽  
Mounira Mahdouani ◽  
Mahfoudh Raïssi ◽  
Ramzi Bourguiga
Keyword(s):  
Solar Cells ◽  
Equivalent Circuit ◽  
Active Layer ◽  
Current Density ◽  
Silver Nanowires ◽  
Photovoltaic Cells ◽  
Organic Photovoltaic ◽  
Physical Parameters ◽  
Electrical Characteristics ◽  
Photovoltaic Solar Cells

Much research has been conducted to improve the performance of photovoltaic solar cells. Transparent conductive film and interconnection layers have a significant impact on the performance of photovoltaic cells. In this work, we analyze the experimental results obtained on tandem organic photovoltaic solar cells with simple inverted structures using silver nanowires AgNW as transparent conductive electrode (TE) and as interconnection layer (ICL) between PEDOT: PSS and ZnO. This type of contact leads to a strong ohmic contact in both sub-cells having P3HT: ICBA as the lower active layer and having PTB7: PC71BM (1: 1.5) as the upper active layer with a good complement of the absorption spectrum. To study the advantages of using AgNWs as an interconnection layer (PEDOT: PSS/AgNWs/ZnO) in tandem photovoltaic solar cells and as an anode and its impact on the performance of these organic cells, we have simulated the electrical characteristics obtained by these tandem organic photovoltaic cells using an equivalent circuit model. This model is based on a single diode model with five photovoltaic parameters. We therefore extracted all the physical parameters of the illuminated photovoltaic cell from its experimental characteristics (J–V), such as the diode saturation current density (J0), the series and shunt resistors (RS, RSh), the ideality factor (n) and the photogenerated current density (JPh). For this we have solved the analytical equations of the current density using Newton Raphson's method. The equations are derived from the single diode equivalent circuit proposed to simulate the measured current density as a function of the voltage of the manufactured tandem type organic solar cells. A good agreement was obtained between the theoretical model and the experimental electrical characteristics. This confirms that the use of AgNWs between PEDOT: PSS and ZnO as an interconnection layer in reverse geometry of these tandem devices, has improved the efficiency (PCE = 9.24%) and is proving to be an efficient recombination layer for tandem organic photovoltaic solar cells.

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