Charge Carriers Motion in P3HT:Capped ZnO Nanoparticles Blend Films; Impact of Capping Agents

2016 ◽  
Vol 1 ◽  
Author(s):  
Ayi Bahtiar
Keyword(s):  
Activation Energy ◽  
Solar Cells ◽  
Charge Carrier ◽  
Zno Nanoparticles ◽  
High Performance ◽  
Active Material ◽  
Charge Carriers ◽  
Capping Agents ◽  
Blend Films ◽  
Carrier Recombination

<p class="TTPAbstract">Blend of conjugated polymer poly(3-hexylthiophene) or P3HT and Zinc Oxide nanoparticles (ZnO-NP) has been intensively used as active material for high performance hybrid solar cells. However, agglomeration of ZnO-NP hinders efficient charge carrier<span lang="IN">s</span> transfer both from P3HT to ZnO-NP and <span lang="IN">their </span>transport within ZnO-NP which cause to low performance of solar cells. Capping of ZnO-NP is currently applied to avoid this agglomeration effect. In this study, we used three different capping agents to cap ZnO-NP, namely small semiconducting molecules squaraine, 2-naphthalene and insulating polymer polyvinylpyrrolidone. We <span lang="IN">conducted</span> temperature dependence of photoinduced infrared absorption spectroscopy to study charge carriers motion in the P3HT:capped ZnO nanoparticles blend films. The measurement was carried out with light irradiation of 532 nm and temperature ranging from 78 to 300 K.  The spectra were analyzed by a bimolecular carrier recombination method with Arrhenius activation energy. Two parallel charge carrier recombination processes are observed, namely polarons recombination along polymer chain (intra-chain) and inter-chain polarons recombination in the P3HT-chains. At low temperatures, polarons recombine along polymer chains (intra-chain) with activation energy between 19-23 eV for all samples. However, the inter-chain polaron motion is influenced by capping agents as shown by a variation in its activation energy ranging from 28 to 58 eV.</p>

scholarly journals Charge Carriers Motion in P3HT:Capped ZnO Nanoparticles Blend Films; Impact of Capping Agents

2016 ◽  
Vol 1 (1) ◽  
Author(s):  
Ayi Bahtiar
Keyword(s):  
Activation Energy ◽  
Solar Cells ◽  
Charge Carrier ◽  
Zno Nanoparticles ◽  
High Performance ◽  
Active Material ◽  
Charge Carriers ◽  
Capping Agents ◽  
Blend Films ◽  
Carrier Recombination

<p class="TTPAbstract">Blend of conjugated polymer poly(3-hexylthiophene) or P3HT and Zinc Oxide nanoparticles (ZnO-NP) has been intensively used as active material for high performance hybrid solar cells. However, agglomeration of ZnO-NP hinders efficient charge carrier<span lang="IN">s</span> transfer both from P3HT to ZnO-NP and <span lang="IN">their </span>transport within ZnO-NP which cause to low performance of solar cells. Capping of ZnO-NP is currently applied to avoid this agglomeration effect. In this study, we used three different capping agents to cap ZnO-NP, namely small semiconducting molecules squaraine, 2-naphthalene and insulating polymer polyvinylpyrrolidone. We <span lang="IN">conducted</span> temperature dependence of photoinduced infrared absorption spectroscopy to study charge carriers motion in the P3HT:capped ZnO nanoparticles blend films. The measurement was carried out with light irradiation of 532 nm and temperature ranging from 78 to 300 K.  The spectra were analyzed by a bimolecular carrier recombination method with Arrhenius activation energy. Two parallel charge carrier recombination processes are observed, namely polarons recombination along polymer chain (intra-chain) and inter-chain polarons recombination in the P3HT-chains. At low temperatures, polarons recombine along polymer chains (intra-chain) with activation energy between 19-23 eV for all samples. However, the inter-chain polaron motion is influenced by capping agents as shown by a variation in its activation energy ranging from 28 to 58 eV.</p>

Efficient Defect Passivation with Niacin for High-Performance and Stable Perovskite Solar Cells

2021 ◽  
Author(s):  
Jing Ren ◽  
Shurong Wang ◽  
Jianxing Xia ◽  
Chengbo Li ◽  
Lisha Xie ◽  
...  
Keyword(s):  
Solar Cells ◽  
Charge Carrier ◽  
High Performance ◽  
Perovskite Solar Cells ◽  
Trap States ◽  
Carrier Recombination ◽  
Defect Passivation ◽  
Recombination Centers ◽  
Charge Carrier Recombination ◽  
Halide Perovskite

Defects, inevitably produced in the solution-processed halide perovskite films, can act as charge carrier recombination centers to induce severe energy loss in perovskite solar cells (PSCs). Suppressing these trap states...

High-performance ternary organic solar cells with thick active layer exceeding 11% efficiency

2017 ◽  
Vol 10 (4) ◽  
pp. 885-892 ◽  
Author(s):  
Nicola Gasparini ◽  
Luca Lucera ◽  
Michael Salvador ◽  
Mario Prosa ◽  
George D. Spyropoulos ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Charge Carrier ◽  
Active Layer ◽  
Organic Solar Cells ◽  
Organic Solar Cell ◽  
High Performance ◽  
Power Conversion ◽  
Carrier Recombination ◽  
Charge Carrier Recombination

We present a novel ternary organic solar cell with an uncommonly thick active layer (∼300 nm), featuring thickness invariant charge carrier recombination and delivering 11% power conversion efficiency (PCE).

Role of Pristine and Acid-Functionalized Fullerene on Breaking Dye Aggregates and its Impact on the Efficiency of Solar Cells

2014 ◽  
Vol 67 (5) ◽  
pp. 819
Author(s):  
Syed Mujtaba Shah ◽  
Zafar Iqbal ◽  
Muzaffar Iqbal ◽  
Naila Shahzad ◽  
Amina Hana ◽  
...  
Keyword(s):  
Solar Cells ◽  
Zno Nanoparticles ◽  
Self Assembly ◽  
Zno Nanorods ◽  
Active Material ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized ◽  
Transmission Electron ◽  
Sensitized Solar Cells

Porphyrin dyes have an inherent tendency to aggregate. This leads to a self-quenching phenomenon that hinders electron transfer to the conduction band of semiconductors in dye-sensitized solar cells. Self-quenching adversely affects the efficiency of solar cells. Here, we report the interaction of porphyrin with pristine and acid-functionalized fullerene molecules on the surface of ZnO nanoparticles under chemisorbed conditions. Chemisorption of porphyrin only on ZnO nanoparticles instigates aggregation of the porphyrin molecules. These aggregates can be effectively broken by chemisorbing fullerene molecules on the surface of the ZnO nanoparticles. This is due to self-assembly formation processes because of porphyrin–fullerene interactions. The nanohybrid material, consisting of ZnO nanorods, acid-functionalized porphyrin, and fullerene derivatives, was characterized by UV–visible spectroscopy, fourier transform infrared spectroscopy, fluorescence spectroscopy, and transmission electron microscopy. The material generates better performing dye-sensitized solar cells when compared with those fabricated from porphyrin-based photo-active material.

scholarly journals Impact of charge carrier recombination and energy disorder on the open-circuit voltage of polymer solar cells

2020 ◽  
Vol 69 (4) ◽  
pp. 046101
Author(s):  
Qing-Zhong Zhou ◽  
Feng Guo ◽  
Ming-Rui Zhang ◽  
Qing-Liang You ◽  
Biao Xiao ◽  
...  
Keyword(s):  
Solar Cells ◽  
Charge Carrier ◽  
Open Circuit Voltage ◽  
Polymer Solar Cells ◽  
Open Circuit ◽  
Carrier Recombination ◽  
Energy Disorder ◽  
Charge Carrier Recombination

Effect of dihydronaphthyl-based C60 bisadduct as third component materials on the photovoltaic performance and charge carrier recombination of binary PBDB-T : ITIC polymer solar cells

Nanoscale ◽  
2018 ◽  
Vol 10 (18) ◽  
pp. 8483-8495 ◽  
Author(s):  
Shengli Niu ◽  
Zhiyong Liu ◽  
Ning Wang
Keyword(s):  
Solar Cells ◽  
Charge Carrier ◽  
Polymer Solar Cells ◽  
Photovoltaic Performance ◽  
Carrier Recombination ◽  
Binary Polymer ◽  
Component Material ◽  
Charge Carrier Recombination

A dihydronaphthyl-based C60 bisadduct (NCBA) acceptor was introduced as a third component material to typical binary polymer solar cells (PSCs).

scholarly journals Hole Transfer Layer Engineering for CdTe Nanocrystal Photovoltaics with Improved Efficiency

Nanomaterials ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 1348 ◽  
Author(s):  
Yasi Jiang ◽  
Yiyang Pan ◽  
Wanhua Wu ◽  
Kaiying Luo ◽  
Zhitao Rong ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Performance ◽  
Annealing Temperature ◽  
Transfer Layer ◽  
Inverted Structure ◽  
Solution Processed ◽  
Hole Transfer ◽  
Carrier Recombination ◽  
Cdte Nanocrystal ◽  
Contact Electrode

Interface engineering has led to significant progress in solution-processed CdTe nanocrystal (NC) solar cells in recent years. High performance solar cells can be fabricated by introducing a hole transfer layer (HTL) between CdTe and a back contact electrode to reduce carrier recombination by forming interfacial dipole effect at the interface. Here, we report the usage of a commercial product 2,2′,7,7′-tetrakis[N,N-di(4-methoxyphenyl)amino]-9,9′-spirobifluorene (Spiro) as a hole transfer layer to facilitate the hole collecting for CdTe nanocrystal solar cells. It is found that heat treatment on the hole transfer layer has significant influence on the NC solar cells performance. The Jsc, Voc, and power conversion efficiency (PCE) of NC solar cells are simultaneously increased due to the decreased contact resistance and enhanced built-in electric field. We demonstrate solar cells that achieve a high PCE of 8.34% for solution-processed CdTe NC solar cells with an inverted structure by further optimizing the HTL annealing temperature, which is among the highest value in CdTe NC solar cells with the inverted structure.

Optimization of charge carrier transport balance for performance improvement of PDPP3T-based polymer solar cells prepared using a hot solution

2015 ◽  
Vol 17 (15) ◽  
pp. 9835-9840 ◽  
Author(s):  
Jian Wang ◽  
Fujun Zhang ◽  
Miao Zhang ◽  
Wenbin Wang ◽  
Qiaoshi An ◽  
...  
Keyword(s):  
Solar Cells ◽  
Charge Carrier ◽  
Performance Improvement ◽  
High Performance ◽  
Carrier Transport ◽  
Polymer Solar Cells ◽  
Charge Carrier Transport

Using a hot solution may prove to be an effective method to improve the charge carrier transport for high performance PSCs.

Partial oxidation of the absorber layer reduces charge carrier recombination in antimony sulfide solar cells

2017 ◽  
Vol 19 (2) ◽  
pp. 1425-1430 ◽  
Author(s):  
Karl C. Gödel ◽  
Bart Roose ◽  
Aditya Sadhanala ◽  
Yana Vaynzof ◽  
Sandeep K. Pathak ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Solar Cells ◽  
Charge Carrier ◽  
Partial Oxidation ◽  
Absorber Layer ◽  
Antimony Sulfide ◽  
Carrier Recombination ◽  
Charge Carrier Recombination ◽  
Sensitized Solar Cells

A controlled heat treatment of the absorber layer in air leads to improved Sb2S3 sensitized solar cells. A reduction in charge carrier recombination is the reason for the enhancement.

Sign in / Sign up

Export Citation Format

Share Document