High face-on ratio isoindigo copolymers with extended nano-fibrillar networks in fullerene-based thick (>300 nm) photovoltaics achieving a high efficiency of 10.7%

2019 ◽  
Vol 7 (37) ◽  
pp. 21309-21320 ◽  
Author(s):  
Song-Fu Liao ◽  
Chun-Fu Lu ◽  
Adane Desta Fenta ◽  
Chin-Ti Chen ◽  
Chi-Yang Chao ◽  
...  
Keyword(s):  
Active Layer ◽  
Current Density ◽  
High Efficiency ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Short Circuit Current Density ◽  
Fibrillar Network

In addition to the thick active layer (>300 nm), the extended nano-fibrillar network and a high face-on ratio of isoindigo copolymers in the nano-fibrillar network raise the short-circuit current density up to 22 mA cm−2 and efficiency near 10.7%.

High efficiency ternary organic solar cell with morphology-compatible polymers

2017 ◽  
Vol 5 (23) ◽  
pp. 11739-11745 ◽  
Author(s):  
Jiangquan Mai ◽  
Haipeng Lu ◽  
Tsz-Ki Lau ◽  
Shih-Hao Peng ◽  
Chain-Shu Hsu ◽  
...  
Keyword(s):  
Solar Cell ◽  
Current Density ◽  
Organic Solar Cell ◽  
Fill Factor ◽  
High Efficiency ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Short Circuit Current Density

The short circuit current density and fill factor are improved in ternary organic solar cell due to the high morphology compatibility.

scholarly journals Влияние толщины базы на эффективность фотопреобразования текстурированных солнечных элементов на основе кремния

2018 ◽  
Vol 44 (19) ◽  
pp. 40
Author(s):  
А.В. Саченко ◽  
В.П. Костылев ◽  
А.В. Бобыль ◽  
В.Н. Власюк ◽  
И.О. Соколовский ◽  
...  
Keyword(s):  
Solar Cells ◽  
Current Density ◽  
High Efficiency ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Short Circuit Current Density ◽  
Photoconversion Efficiency ◽  
Base Thickness ◽  
High Efficiency Solar Cells ◽  
Complete Optimization

AbstractA theory is developed, which describes the experimental external quantum efficiency, EQE (λ) as a function of photon wavelength for structured Si-based solar cells. Short-circuit current density as a function of base thickness, d , is calculated for the high-efficiency solar cells with the photoconversion efficiency η ≥ 25% The procedure allows one to carry out a complete optimization of such solar cells, in particular, to find the optimal base thickness, d _opt.

scholarly journals Solution-Processed rGO/AgNPs/rGO Sandwich Structure as a Hole Extraction Layer for Polymer Solar Cells

2015 ◽  
Vol 2015 ◽  
pp. 1-5 ◽  
Author(s):  
Quang Trung Tran ◽  
Hoang Thi Thu ◽  
Vinh Son Tran ◽  
Tran Viet Cuong ◽  
Chang-Hee Hong
Keyword(s):  
Silver Nanoparticles ◽  
Solar Cells ◽  
Active Layer ◽  
Current Density ◽  
Sandwich Structure ◽  
Polymer Solar Cells ◽  
Short Circuit ◽  
Photovoltaic Performance ◽  
Short Circuit Current ◽  
Short Circuit Current Density

We found that inserting silver nanoparticles (AgNPs) between two layers of reduced grapheme oxide (rGO) has an effect on tailoring the work function of rGO. The utilization of rGO/AgNPs/rGO sandwich structure as the hole extraction layer in polymer solar cells is demonstrated. Solution-processable fabrication of this sandwich structure at the ITO/active layer interface facilitates the extraction of hole from active layer into ITO anode because of lowering the barrier level alignment at the interface. It results in an improvement of the short circuit current density and the overall photovoltaic performance.

scholarly journals Role of polysilicon in poly-Si/SiOx passivating contacts for high-efficiency silicon solar cells

RSC Advances ◽  
2019 ◽  
Vol 9 (40) ◽  
pp. 23261-23266 ◽  
Author(s):  
HyunJung Park ◽  
Soohyun Bae ◽  
Se Jin Park ◽  
Ji Yeon Hyun ◽  
Chang Hyun Lee ◽  
...  
Keyword(s):  
Solar Cell ◽  
Current Density ◽  
Silicon Solar Cell ◽  
Fill Factor ◽  
High Efficiency ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Short Circuit Current Density ◽  
Silicon Solar Cells

The efficiency of silicon solar cell with poly-Si/SiOx passivating contact was improved by etching of poly-Si which improves short circuit current density without affecting passivation quality and fill factor.

The Effect of Graphene/Ag Nanoparticles Layer on the Performances of Organic Solar Cells

2014 ◽  
Vol 953-954 ◽  
pp. 1067-1071 ◽  
Author(s):  
Cheng Fang Ou ◽  
Syue Yan Chen
Keyword(s):  
Active Layer ◽  
Current Density ◽  
Ag Nanoparticles ◽  
Fill Factor ◽  
Cell Structure ◽  
Short Circuit ◽  
Photovoltaic Performance ◽  
Weight Ratio ◽  
Short Circuit Current ◽  
Short Circuit Current Density

Graphene/Ag nanoparticles (GAg) were fabricated via a facile method, employing graphite oxide as a precursor of graphene (GNS), AgNO3 as a precursor of Ag nanoparticles, and sodium citrate as a reducing and stabilizing agent. We synthesized three kinds of GAg and denominated as GAg-1、GAg-2 and GAg-3. Graphene exhibits good electron conductivity, thermal conductivity, chemical stability and mechanical strength. We investigated the effect of inserting Graphene/Ag nanoparticles between hole transfer layer (HTL) of poly (ethylene dioxythiophene) (PEDOT)-polystyrene sulfonic acid (PSS) (PEDOT:PSS) and active layer (P3HT:PCBM =1:1 weight ratio) on the characteristics of polymer solar cell. The cell structure was ITO/PEDOT:PSS/GAg/P3HT:PCBM/Ca/Al. The concentration of Graphene/Ag nanoparticles solution was 2.0 mg/ml and the GAg nanoparticles layer was coated by spin-coating at 6000 rpm. We studied the effect of GAg layer addition on the photovoltaic performance. We used the UV-Vis, SPM, FE-SEM and solar simulator to measure the absorbance, roughness, surface morphology, and power conversion efficiency (PCE), respectively. From these results, we found that the short circuit current density (Jsc), fill factor (FF) and PCE of the cells with GNS or GAg were always higher than those of cell without GNS or GAg. The cell with GAg-2 had the highest short circuit current density (Jsc) of 9.14 mA/cm2, an increase of 28.4%, highest fill factor (FF) of 0.65, an increase of 32.7% and highest PCE of 3.82%, an increase of 71.3% when compared to standard device with active layer of P3HT:PCBM =1:1. These improvements were due to the high carrier mobility of graphene.

Introducing methoxy or fluorine on the conjugated side chain to reduce the voltage loss of organic solar cells

2021 ◽  
Author(s):  
You Chen ◽  
Chuanxiu Jiang ◽  
Jiacheng Wang ◽  
Ailing Tang ◽  
Bao Zhang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Current Density ◽  
Organic Solar Cells ◽  
High Efficiency ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Short Circuit Current Density ◽  
Side Chain ◽  
Vital Importance ◽  
Voltage Loss

Developing effective method to decrease the voltage loss (Vloss) and increase the short-circuit current density (JSC) simultaneously is of vital importance to realize high-efficiency organic photovoltaics (OPV). Herein, we adopted...

High short-circuit current density in a non-toxic Bi2S3 Quantum dot sensitized solar cell

2021 ◽  
pp. 100783
Author(s):  
Christopher Rosiles-Perez ◽  
Sirak Sidhik ◽  
Luis Ixtilico-Cortés ◽  
Fernando Robles-Montes ◽  
Tzarara López-Luke ◽  
...  
Keyword(s):  
Solar Cell ◽  
Quantum Dot ◽  
Current Density ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Short Circuit Current Density

IMPROVING STABILITY OF CHLOROPHYLL AS NATURAL DYE FOR DYE-SENSITIZED SOLAR CELLS

2017 ◽  
Vol 80 (1) ◽  
Author(s):  
Zainal Arifin ◽  
Sudjito Soeparman ◽  
Denny Widhiyanuriyawan ◽  
Suyitno Suyitno ◽  
Argatya Tara Setyaji
Keyword(s):  
Current Density ◽  
Open Circuit Voltage ◽  
Short Circuit ◽  
Dye Sensitized Solar Cells ◽  
Short Circuit Current ◽  
Short Circuit Current Density ◽  
Open Circuit ◽  
Natural Dyes ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Natural dyes have attracted much researcher’s attention due to their low-cost production, simple synthesis processes and high natural abundance. However the dye-sensitized solar cells (DSSCs) based natural dyes have higher tendency to degradation. This article reports on the enhancement of performance and stability of dye-sensitized solar cells (DSSCs) using natural dyes. The natural dyes were extracted from papaya leaves by ethanol solvent at a temperature of 50 °C. Then the extracted dyes were isolated and modified into Mg-chlorophyll using column chromatography. Mg-chlorophyll was then synthesized into Fe-chlorophyll to improve stability. The natural dyes were characterized using ultraviolet-visible spectrometry, Fourier transform infrared spectroscopy, and cyclic voltammetry. The performance of DSSCs was tested using a solar simulator. The results showed the open-circuit voltage, the short-circuit current density, and the efficiency of the extracted papaya leaves-based DSSCs to be 325 mV, 0.36 mA/cm2, and 0.07%, respectively. Furthermore, the DSSCs with purified chlorophyll provide high open-circuit voltage of 425 mV and short-circuit current density of 0.45 mA/cm2. The use of Fe-chlorophyll for sensitizing the DSSCs increases the efficiency up to 2.5 times and the stability up to two times. The DSSCs with Fe-chlorophyll dyes provide open-circuit voltage, short-circuit current density, and efficiency of 500 mV, 0.62 mA/cm2, and 0.16%, respectively. Further studies to improve the current density and stability of natural dye-based DSSCs along with an improvement in the anchor between dyes and semiconducting layers are required.

scholarly journals Delineating the enhanced efficiency of carbon nanomaterials including the hierarchical architecture of the photoanode of dye-sensitized solar cells

2020 ◽  
Vol 1 (8) ◽  
pp. 2964-2970
Author(s):  
Venkatesan Srinivasan ◽  
Jagadeeswari Sivanadanam ◽  
Kothandaraman Ramanujam ◽  
Mariadoss Asha Jhonsi
Keyword(s):  
Current Density ◽  
Carbon Nanomaterials ◽  
Short Circuit ◽  
Power Conversion ◽  
Dye Sensitized Solar Cells ◽  
Short Circuit Current ◽  
Short Circuit Current Density ◽  
Hierarchical Architecture ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

The inclusion of CNMs together with TiO2 enhanced the short circuit current density by 31% and power conversion efficiency (PCE) by 46% compared to the CNM-free DSSCs.

scholarly journals Разработка и исследование туннельных p-i-n-диодов GaAs/AlGaAs для многопереходных преобразователей мощного лазерного излучения

2020 ◽  
Vol 54 (3) ◽  
pp. 285
Author(s):  
В.С. Калиновский ◽  
Е.В. Контрош ◽  
Г.В. Климко ◽  
С.В. Иванов ◽  
В.С. Юферев ◽  
...  
Keyword(s):  
Current Density ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Short Circuit Current Density ◽  
Tunnel Diode ◽  
Tunnel Diodes ◽  
Tunnel Current ◽  
Type Layer ◽  
Current Voltage ◽  
Current Voltage Characteristics

Fabrication of connecting tunnel diodes with high peak tunnel current density exceeding the short-circuit current density of photoactive p−n junctions is an important task in development of multi-junction III−V photovoltaic converters of high-power optical radiation. Based on the results of a numerical simulation of tunnel diode current−voltage characteristics, a method is suggested for raising the peak tunnel current density by connecting a thin undoped i-type layer with thickness of several nanometers between the degenerate layers of a tunnel diode. The method of molecular-beam epitaxy was used to grow p−i−n GaAs/Al0.2Ga0.8As structures of connecting tunnel diodes with peak tunnel current density of up to 200A/cm2 .

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