Effect of 1,8-Diiodooctane on the Performance of P3HT:PCBM Solar Cells

2015 ◽  
Vol 137 (3) ◽  
Author(s):  
M. Nasiri ◽  
F. Abbasi
Keyword(s):  
Solar Cells ◽  
Active Layer ◽  
Indium Tin Oxide ◽  
Short Circuit ◽  
Acid Methyl Ester ◽  
Short Circuit Current ◽  
Xrd Analysis ◽  
Open Circuit ◽  
Force Microscopy ◽  
Uv Visible

Effect of 1,8-diiodooctane on the performance of poly(3-hexylthiophene) (P3HT):[6,6]-phenyl-C61-butyric acid methyl ester (PCBM) solar cells with glass/indium tin oxide (ITO)/poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS)/P3HT: PCBM/Ca/Al structure was studied. The morphology and thickness of the active layer were investigated using atomic force microscopy (AFM). The UV-visible spectroscopy and X-ray diffraction (XRD) analysis were used to study the absorption behavior (of the solutions and coated layers) and crystallinity of the active layer, respectively. The results show that the existence of 1,8-diiodooctane reduced the open circuit voltage from 0.81 to 0.52 V and increased the short circuit current by about three folds; the fill factor (FF) and power conversion efficiency were increased from 36.0 to 54.1% and 0.47% to 1.54%, respectively. These changes can be attributed to the enhanced crystallinity of P3HT or the doping effect of 1,8-diiodooctane on P3HT chains. UV-visible analysis demonstrated that the addition of 1,8-diiodooctane to the solution did not change the absorption onset, whereas in the coated layers, the maximum absorption peak shifted to higher wavelengths. The XRD analyses demonstrated the enhancement of crystallinity of P3HT upon the introduction of 1,8-diiodooctane.

scholarly journals Fabrication of Hybrid Polymer Solar Cells By Inverted Structure Based on P3HT:PCBM Active Layer

2017 ◽  
Vol 17 (1) ◽  
pp. 13
Author(s):  
Shobih Shobih ◽  
Rizky Abdillah ◽  
Erlyta Septa Rosa
Keyword(s):  
Solar Cells ◽  
Active Layer ◽  
Bulk Heterojunction ◽  
Polymer Solar Cells ◽  
Short Circuit ◽  
Sol Gel ◽  
Short Circuit Current ◽  
Short Circuit Current Density ◽  
Open Circuit ◽  
Hybrid Polymer

Hybrid polymer solar cell has privilege than its conventional structure, where it usually has structure of (ITO/PEDOT:PSS/Active Layer/Al). In humid environment the PEDOT:PSS will absorb water and hence can easily etch the ITO. Therefore it is necessary to use an alternative method to avoid this drawback and obtain more stable polymer solar cells, namely by using hybrid polymer solar cells structure with an inverted device architecture from the conventional, by reversing the nature of charge collection. In this paper we report the results of the fabrication of inverted bulk heterojunction polymer solar cells based on P3HT:PCBM as active layer, utilizing ZnO interlayer as buffer layer between the ITO and active layer with a stacked structure of ITO/ZnO/P3HT:PCBM/PEDOT:PSS/Ag. The ZnO interlayer is formed through short route, i.e. by dissolving ZnO nanoparticles powder in chloroform-methanol solvent blend rather than by sol-gel process. Based on the measurement results on electrical characteristics of inverted polymer solar cells under 500 W/m2 illumination and AM 1.5 direct filter at room temperature, cell with annealing process of active layer at 110 °C for 10 minutes results in higher cell performance than without annealing, with an open-circuit voltage of 0.21 volt, a short-circuit current density of 1.33 mA/cm2 , a fill factor of 43.1%, and a power conversion efficiency of 0.22%. The low cell’s performance is caused by very rough surface of ZnO interlayer.

scholarly journals Improvement of short circuit current of mono crystalline silicon solar cells

2013 ◽  
Vol 16 (1) ◽  
pp. 48-56
Author(s):  
Vu Ngoc Hoang ◽  
Linh Ngoc Tran ◽  
Lan Truong ◽  
Khoa Thanh Nhat Phan ◽  
Chien Mau Dang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Indium Tin Oxide ◽  
Crystalline Silicon ◽  
Short Circuit ◽  
Front Surface ◽  
Short Circuit Current ◽  
Open Circuit ◽  
Crystalline Silicon Solar Cell ◽  
Antireflection Coatings

In this report we present series of experiments during which the short circuit current of mono crystalline silicon solar cell was improved step by step so as a consequence the efficiency was increased. At first, the front contact of solar cell was optimized to reduce the shadow loss and the series resistance. Then surface treatments were prepared by TMAH solution to reduce the total light reflectance and to improve the light trapping effect. Finally, antireflection coatings were deposited to passivate the front surface either by silicon nitride thin layer or to increase the collection probability by indium tin oxide layer, and to reduce the reflectance of light. As a result, solar cells of about 13% have been obtained, with the average open circuit voltage Voc about 527mV, with the fill factor about 68% and the short circuit current about 7.92 mA/cm2 under the irradiation density of 21 mW/cm2.

Nanoscale Phase Separation in Ternary Organic Solar Cells Based on PTB7:PC70BM:IC70BA

2021 ◽  
Vol 21 (11) ◽  
pp. 5749-5755
Author(s):  
Chang Li ◽  
Wei Li ◽  
Xiaoxiang Sun ◽  
Jifei Wang ◽  
Jiayou Tao ◽  
...  
Keyword(s):  
Solar Cells ◽  
Phase Separation ◽  
Active Layer ◽  
Organic Solar Cells ◽  
Short Circuit ◽  
Weight Ratio ◽  
Short Circuit Current ◽  
Open Circuit ◽  
Hole Transport ◽  
Fullerene Derivative

As a fullerene derivative, IC70BA is widely used in the ternary organic solar cells (TOSCs) to increase the open circuit voltage (Voc) of the devices. Unfortunately, most of the literature shows that IC70BA will lead to a reduction in the short-circuit current density (Jsc) and fill factor (FF). In this work, IC70BA is added to the PTB7:PC70BM binary system to form the ternary system, which is composed of one donor and two fullerene acceptors. Surprisingly, the addition of IC70BA does not immediately lead to a decrease in Jsc and FF. In fact, the appropriate weight ratio of IC70BA in fullerenes can simultaneously increase the Voc, Jsc, and FF of the TOSCs. The synergistic optimization of the surface and bulk morphology of the ternary active layer suppresses the attenuation of Jsc and FF. The smooth surface and suitable phase separation size effectively guarantee the separation, transport and extraction of the charge. Moreover, the addition of IC70BA can significantly improve the hole transport capacity of the active layer, and the optimal hole mobility is 5.13 – 10”4 cm2V–1S–1. Finally, the TOSCs with 10% weight ratio of IC70BA gives the optimal PCE of 9.24% and ideality factor of 2.3.

scholarly journals Stability of High Band Gap P3HT : PCBM Organic Solar Cells Using TiOxInterfacial Layer

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Kurniawan Foe ◽  
Gon Namkoong ◽  
Matthew Samson ◽  
Enas M. Younes ◽  
Ilho Nam ◽  
...  
Keyword(s):  
Active Layer ◽  
Organic Solar Cells ◽  
Interfacial Layer ◽  
Short Circuit ◽  
Sol Gel ◽  
Acid Methyl Ester ◽  
Short Circuit Current ◽  
Short Circuit Current Density ◽  
Open Circuit ◽  
Photon Absorption

We fabricated a poly[3-hexylthiophene] (P3HT) and [6,6]-phenyl-C61-butyric acid methyl ester (PC61BM) organic photovoltaic cells (OPCs) using TiOxinterfacial layer. We performed optimization processes for P3HT : PC61BM with the TiOxlayer. We found that a solution based TiOxlayer coated at a spin speed of 3000 rpm improved the photon absorption of the active layer. An optimized TiOxlayer was also used as the interfacial layer to investigate the stability of P3HT : PC61BM OPC. After 70 days of storage, we observed that the short-circuit current density (JSC) dropped by 16.2%, fill factor (FF) dropped by 10.6%, and power conversion efficiency (PCE) dropped approximately by 25%, while the open-circuit voltage (VOC) remained relatively stable. We found that a solution based TiOxlayer synthesized using a sol-gel chemistry method was very effective in protecting the active layer from degradation.

In Situ Cadmium Suflide Synthesis in Polymer Thin Film for Solar Cells Application

2015 ◽  
Vol 1107 ◽  
pp. 625-630
Author(s):  
Fatin Hana Naning ◽  
S. Malik ◽  
Zanuldin Ahmad
Keyword(s):  
Thin Film ◽  
Hydrogen Sulfide ◽  
Solar Cells ◽  
Active Layer ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Short Circuit Current Density ◽  
Open Circuit ◽  
Polymer Thin Film ◽  
Regioregular Poly

Cadmium sulfide (CdS) were synthesised directly in the active layer of solar cell by mixing regioregular poly (3-hexylthiophene-2,5-diyl) or P3HT with stearic acid, and exposed to hydrogen sulfide gas. The exposure times to hydrogen sulfide gas were varied and the isotherm of P3HT:Stearic acid obtained show that the presence of cadmium ions in the subphase changes the gas-liquid-solid transformation profile. UV-Vis-NIR results indicated that exposure to hydrogen sulfide gas created CdS particles resulting in wider absorption spectra. The exposed P3HT:SA active layer exhibit high resistance that affects short circuit current density and open circuit voltage of the solar cells device. Keywords: CdS, P3HT, Thin Film, Angle Lifting Deposition, Solar Cells

New Physical and Chemical Treatments to Improve the Quantum Efficiency in Polymer Solar Cells

2008 ◽  
Vol 1091 ◽  
Author(s):  
Osamu Yoshikawa ◽  
Taro Sonobe ◽  
Takashi Sagawa ◽  
Susumu Yoshikawa
Keyword(s):  
Solar Cells ◽  
Bulk Heterojunction ◽  
Polymer Solar Cells ◽  
Short Circuit ◽  
Acid Methyl Ester ◽  
Single Mode ◽  
Short Circuit Current ◽  
Microwave Treatment ◽  
Short Circuit Current Density ◽  
Open Circuit

AbstractThe performance of the devices of bulk heterojunction polymer-based solar cells were investigated by using poly(3-hexylthiophene) (P3HT) and (6,6)-phenyl C61 butyric acid methyl ester (PCBM) as light absorption (viz. active) layer, with TiOx as interlayer as follows: ITO/PEDOT:PSS/P3HT-PCBM/TiOx/Al [1] through the treatment of microwave irradiation (single mode of 2.45 GHz, 800 W for 1, 2.5, or 5 min). Such treatments enabled to increase the short-circuit current density Jsc (from 4.53 mA cm−2 to 7.27 mA cm−2) and fill factor FF (from 0.41 to 0.66) of the cell, though the open circuit voltage Voc was decreased (from 0.61 V to 0.57 V) along the irradiation. Absorption spectra of P3HT-PCBM blended film before and after the microwave treatment were observed. Shoulders at 550 nm and 600 nm appeared after the irradiation. This result implies that the microcrystallization of P3HT was slightly promoted through the microwave treatment.

scholarly journals Passivation Effect of CsPbI3 Quantum Dots on the Performance and Stability of Perovskite Solar Cells

Photonics ◽  
2021 ◽  
Vol 9 (1) ◽  
pp. 3
Author(s):  
Genjie Yang ◽  
Dianli Zhou ◽  
Jiawen Li ◽  
Junsheng Yu
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Active Layer ◽  
Short Circuit ◽  
Perovskite Solar Cells ◽  
Short Circuit Current ◽  
Open Circuit ◽  
Vacancy Defects ◽  
Key Factor

The quality of active layer film is the key factor affecting the performance of perovskite solar cells. In this work, we incorporated CsPbI3 quantum dots (QDs) materials into the MAPbI3 perovskite precursor to form photoactive layer. On one hand, CsPbI3 QDs can be used as nucleation center to enhance the compactness of the perovskite film, and on the other hand, partially CsPbI3 QDs can be dissociated as anions and cations to passivate vacancy defects in the perovskite active layer. As a result, the film quality of the active layer was improved remarkably, thus exciton recombination was reduced, and carrier transfer increased accordingly. The devices based on doped-CsPbI3 QDs film had higher short circuit current, open circuit voltage and filling factor. Finally, the power conversion efficiency (PCE) was greatly enhanced from 14.85% to 17.04%. Furthermore, optimized devices also exhibited better stability. This work provides an effective strategy for the processing of high-quality perovskite films, which is of great value for the preparation and research of perovskite photoelectronic devices.

scholarly journals PREPARATION AND CHARACTERIZATION OF P3HT-PCBM ORGANIC SOLAR CELLS

2013 ◽  
pp. 23-25
Author(s):  
ANUBHAV GUPTA ◽  
PRAVEEN S ◽  
ABHISHEK KUMAR ◽  
PRIYANKA SHREE ◽  
SUCHANA MISHRA
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Active Layer ◽  
Organic Solar Cells ◽  
Silicon Solar Cell ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Open Circuit ◽  
Glass Substrates

Organic solar cells using P3HT: PCBM as an active layer on ITO coated glass substrates were fabricated and characterized. Different air annealing procedures and cathode materials were tried and the characteristics were compared with that of a standard thin film polycrystalline silicon solar cell. It was found that the sample prepared with post-deposition air annealing at 130 oC improves the open circuit voltage (Voc) considerably. Besides, short circuit current (Isc) and the efficiency (η) were highest for the sample with a non annealed active layer. Series resistance (Rs) for this sample was lowest, but 103 times higher than that of the silicon solar cell, which in turn may have reduced the efficiency value for the organic cell compared to silicon.

Study of Al/Organic/ITO Polymer Solar Cell on Glass Substrate

2013 ◽  
Vol 448-453 ◽  
pp. 1446-1451
Author(s):  
Yi Tsung Chang ◽  
Jen Hong Su ◽  
Yi Ting Shih ◽  
Yen Lin Shih
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Active Layer ◽  
Organic Solar Cells ◽  
Glass Substrate ◽  
Polymer Solar Cells ◽  
Short Circuit ◽  
Single Layer ◽  
Short Circuit Current ◽  
Open Circuit

A single layer of organic solar cells with the Al/P3HT/PEDOT: PSS/ITO structure on glass substrate was investigated in this paper, and examined the performance of the polymer solar cells by changing 60, 70 and 80 nm thickness of the P3HT active layer. These devices had better absorption in the active layer and poor charges collect in the electrode with increase thickness of active layer were observed. It is found that the best properties that the single layer organic solar cell with open-circuit voltage 0.457 V, short-circuit current 1.05E-4 mA and power conversion efficiency of 3.3E-5% was achieved under illumination 100 mW/cm2 when the thickness of P3HT active layer is about 80 nm.

Novel SnSb2S4 Thin Films Obtained by Chemical Bath Deposition using Tartaric Acid as Complexing Agent for Their Application as Absorber in Solar Cells

MRS Advances ◽  
2019 ◽  
Vol 4 (37) ◽  
pp. 2035-2042 ◽  
Author(s):  
L.A. Rodríguez-Guadarrama ◽  
I.L. Alonso-Lemus ◽  
J. Campos-Álvarez ◽  
J. Escorcia-García
Keyword(s):  
Thin Films ◽  
Solar Cells ◽  
Tartaric Acid ◽  
Chemical Bath Deposition ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Xrd Analysis ◽  
Short Circuit Current Density ◽  
Open Circuit ◽  
Complexing Agent

ABSTRACTTernary Sn-Sb-S thin films with remarkable optical, electrical and structural properties were developed by chemical bath deposition. Tin and antimony chlorides and thioacetamide were used as tin, antimony, and sulfur ion sources, respectively, while tartaric acid was used as a complexing agent. XRD analysis of as-deposited films showed a combination of binary phases of SnS, Sn2S3, and Sb2S3, while after thermal treatment in nitrogen at 400 °C, the films became crystalline showing well-defined reflections of the ternary SnSb2S4. The heating also influenced the morphology, compactness, and thickness of the films. On the other hand, all the films showed an absorption coefficient higher than 104 cm-1, while the optical band gap of the as-deposited film decreased from 1.49 to 1.37 eV after heating at 400 °C. In addition, the photoconductivity of the films prior to heating was of 10-9 Ω-1 cm-1, while after that at 400 °C was of 10-7 Ω-1 cm-1. The evaluation of the ternary film in solar cells gave an open-circuit voltage Voc of 448 mV and short-circuit current density of Jsc of 2.4 mA/cm2.

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