Regulating active layer thickness and morphology for high performance hot-casted polymer solar cells

2020 ◽  
Vol 8 (24) ◽  
pp. 8191-8198
Author(s):  
Ritesh Kant Gupta ◽  
Rabindranath Garai ◽  
Mohammad Adil Afroz ◽  
Parameswar Krishnan Iyer

Fabrication of high performance polymer solar cells through the hot-casting technique, which modulates the thickness and roughness of the active layer and also the carrier mobility of the solar cell devices.

2018 ◽  
Vol 271 ◽  
pp. 106-111
Author(s):  
Jun Ning ◽  
Ming Ming Bao ◽  
Lian Hong ◽  
Hasichaolu ◽  
Bolag Altan ◽  
...  

Research on polymer solar cells has attracted increasing attention in the past few decades due to the advantages such as low cost of fabrication, ease of processing, mechanical flexibility, etc. In recent years, non-fullerene polymer solar cells are extensively studied, because of the reduced voltage losses, and the tunability of absorption spectra and molecular energy level of non-fullerene acceptors. In this work, polymer solar cells based on conjugated polymer (PBDB-T: poly [(2,6-(4,8-bis (5-(2-ethylhexyl) thiophen-2-yl)-benzo [1,2-b:4,5-b’] dithiophene))-alt-(5,5-(1’,3’-di-2-thienyl-5’,7’-bis (2-ethylhexyl) benzo [1’,2’-c:4’,5’-c’] dithiophene-4,8-dione))]) and non-fullerene electron acceptor (ITIC: 3,9-bis (2-methylene-(3-(1,1-dicyanomethylene)-indanone)) -5,5,11,11-tetrakis (4-hexylphenyl)-dithieno [2,3-d:2’,3’-d’]-s-indaceno [1,2-b:5,6-b’] dithiophene) were prepared by means of spin-coating method, and the influence of the active layer thickness on the device performance was investigated. PBDB-T: ITIC active layers with different thickness were prepared through varying spin coating speed. It was found that the solar cell performance is best when the active layer thickness is 100 nm, corresponding to the spin coating speed of 2000 rpm. Maximum power conversion efficiency of 7.25% with fill factor of 65%, open circuit voltage of 0.85 V and short circuit current density of 13.02 Am/cm2 was obtained.


Author(s):  
Ritesh Kant Gupta ◽  
Rabindranath Garai ◽  
Maimur Hossain ◽  
Mohammad Adil Afroz ◽  
Dibashmoni Kalita ◽  
...  

Achieving high power conversion efficiency (PCE) polymer solar cells (PSCs) has been very challenging and the ultimate goal for their commercialization. Precise investigation of the active layer morphology and newer...


2016 ◽  
Vol 28 (34) ◽  
pp. 7521-7526 ◽  
Author(s):  
Li Nian ◽  
Zhenhui Chen ◽  
Stefanie Herbst ◽  
Qingyuan Li ◽  
Chengzhuo Yu ◽  
...  

2017 ◽  
Vol 5 (6) ◽  
pp. 2460-2465 ◽  
Author(s):  
Yang Wang ◽  
Wei-Dong Xu ◽  
Jian-Dong Zhang ◽  
Lu Zhou ◽  
Gang Lei ◽  
...  

A small-molecule/fullerene binary acceptor system with enhanced light-harvesting properties and balanced carrier mobility was developed for high-performance polymer solar cells.


2019 ◽  
Vol 9 (45) ◽  
pp. 1902688 ◽  
Author(s):  
Yamin Zhang ◽  
Huanran Feng ◽  
Lingxian Meng ◽  
Yanbo Wang ◽  
Meijia Chang ◽  
...  

2019 ◽  
Vol 6 (1-2) ◽  
pp. 23-28 ◽  
Author(s):  
Megha Grover ◽  
Monika Nehra ◽  
Deepak Kedia

Abstract Organic solar cells deal with small organic molecules for absorption of light at low cost and high efficiency. In this paper, we have analyzed the photovoltaic (PV) characteristics of double heterojunction solar cell that consists of copper phthalocyanine (CuPc) and 3,4,9,10-perylenetetracarboxylic bis-benzimidazole (PTCBI) thin films. Here, CuPc and PTCBI layers are combined by an interfacial layer consisting of nanoscale dots. Different plasmonic materials (i. e. Ag, Au, and graphene) are selected as alternative nanoscale dot layer to examine their effect on solar cell performance. Further, the solar cell performance is also examined via variation in active layer thickness. The choice of interfacial layer material and variation in active layer thickness offer grounds for future efficient PV cells.


2021 ◽  
Vol 11 (1) ◽  
Author(s):  
MirKazem Omrani ◽  
Hamidreza Fallah ◽  
Kwang-Leong Choy ◽  
Mojtaba Abdi-Jalebi

AbstractThe solution processable polymer solar cells have shown a great promise as a cost-effective photovoltaic technology. Here, the effect of carrier mobility changes has been comprehensively investigated on the performance of P3HT:PCBM polymer solar cells using electro-optical coupled simulation regimes, which may result from the embedding of SiO2@Ag@SiO2 plasmonic nanoparticles (NPs) in the active layer. Firstly, the active layer thickness, stemmed from the low mobility of the charge carriers, is optimized. The device with 80 nm thick active layer provided maximum power conversion efficiency (PCE) of 3.47%. Subsequently, the PCE has increased to 6.75% and 6.5%, respectively, along with the benefit of light scattering, near-fields and interparticle hotspots produced by embedded spherical and cubic nanoparticles. The PCE of the devices with incorporated plasmonic nanoparticles are remarkably enhanced up to 7.61% (for spherical NPs) and 7.35% (for cubic NPs) owing to the increase of the electron and hole mobilities to $${\upmu }_{e}=8\times {10}^{-7} \,{\text{m}}^{2}/\text{V}/\text{s}$$ μ e = 8 × 10 - 7 m 2 / V / s and $${\upmu }_{h}=4\times {10}^{-7} \,{\text{m}}^{2}/\text{V}/\text{s}$$ μ h = 4 × 10 - 7 m 2 / V / s , respectively (in the optimum case). Furthermore, SiO2@Ag@SiO2 NPs have been successfully synthesized by introducing and utilizing a simple and eco-friendly approach based on electroless pre-treatment deposition and Stober methods. Our findings represent a new facile approach in the fabrication of novel plasmonic NPs for efficient polymer solar cells.


RSC Advances ◽  
2016 ◽  
Vol 6 (28) ◽  
pp. 23760-23774 ◽  
Author(s):  
Ranjith Krishna Pai ◽  
Ahipa T. N. ◽  
Hemavathi B.

We present a concise review of conjugated polymers based on benzodithiophenes (BDTs) for high-performance polymer solar cells (PSCs).


2015 ◽  
Vol 3 (40) ◽  
pp. 20195-20200 ◽  
Author(s):  
Xue Gong ◽  
Guangwu Li ◽  
Cuihong Li ◽  
Jicheng Zhang ◽  
Zhishan Bo

New benzothiadiazole based conjugated polymers have been synthesized as donor materials for high efficiency polymer solar cells with a thick active layer.


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