Influence of PEDOT:PSS Doping on the Performance of Organic Solar Cells

Fabrication of Organic Solar Cells (OSC) using PEDOT:PSS, has been focussed on the formation of the four-layered configuration of : ITO / PEDOT:PSS / P3TH:PC60 BM / LiF with Al metal layers its electrode. The active layer comprised P3TH:PC60 BM, where P3HT formed the donor and PC60 BM the acceptor components. Interestingly, it has been observed that the OSCs fabricated from ethylene glycol doped PEDOT:PSS depicted Power Conversion Efficiency (PCE) of about 2 times more than that of OSCs made from pure PEDOT:PSS. After optimizing process parameters(~ 16% of DMF, ~10% of DMSO, and ~ 12% EG in PEDOT:PSS) and continued loading of doped components, the conductivity reflected a decreasing trend. Such a phenomenon was attributed to an increasing distance between the successive conductive grain/domain, which has been explained based on Atomic Force Microscopy (AFM). Moreover, stress has been made on the inter-junction behavior of carrier transport, particularly the hole conduction mechanism. Further, the perovskite-based solar cell has been compared and discussed to understand material behavior and device performance better.

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Optimization of solution-processed oligothiophene:fullerene based organic solar cells by using solvent additives

Beilstein Journal of Nanotechnology ◽

10.3762/bjnano.4.77 ◽

2013 ◽

Vol 4 ◽

pp. 680-689 ◽

Cited By ~ 8

Author(s):

Gisela L Schulz ◽

Marta Urdanpilleta ◽

Roland Fitzner ◽

Eduard Brier ◽

Elena Mena-Osteritz ◽

...

Keyword(s):

Solar Cells ◽

Organic Solar Cells ◽

Bulk Heterojunction ◽

Solution Processed ◽

Heterojunction Solar Cells ◽

Force Microscopy ◽

Vacuum Technology ◽

Atomic Force ◽

Donor And Acceptor ◽

Conversion Efficiencies

The optimization of solution-processed organic bulk-heterojunction solar cells with the acceptor-substituted quinquethiophene DCV5T-Bu 4 as donor in conjunction with PC61BM as acceptor is described. Power conversion efficiencies up to 3.0% and external quantum efficiencies up to 40% were obtained through the use of 1-chloronaphthalene as solvent additive in the fabrication of the photovoltaic devices. Furthermore, atomic force microscopy investigations of the photoactive layer gave insight into the distribution of donor and acceptor within the blend. The unique combination of solubility and thermal stability of DCV5T-Bu 4 also allows for fabrication of organic solar cells by vacuum deposition. Thus, we were able to perform a rare comparison of the device characteristics of the solution-processed DCV5T-Bu 4 :PC61BM solar cell with its vacuum-processed DCV5T-Bu 4 :C60 counterpart. Interestingly in this case, the efficiencies of the small-molecule organic solar cells prepared by using solution techniques are approaching those fabricated by using vacuum technology. This result is significant as vacuum-processed devices typically display much better performances in photovoltaic cells.

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Aluminum-Doped Titanium Dioxide Thin Films: A Study of Different Concentrations on Poly(3-hexylthiophene): PhenylC61-Butyric Acid Metheyester-Based Organic Solar Cells

Journal of Computational and Theoretical Nanoscience ◽

10.1166/jctn.2020.9409 ◽

2020 ◽

Vol 17 (11) ◽

pp. 4849-4854

Author(s):

Buraq T. Sh. Al-Mosawi ◽

Mohammed K. Al-Hashimi ◽

Ameer F. Abdulameer

Keyword(s):

Titanium Dioxide ◽

Solar Cells ◽

Organic Solar Cells ◽

Sol Gel ◽

Morphological Characteristics ◽

Force Microscopy ◽

Atomic Force ◽

Doped Titanium Dioxide ◽

Gel Preparation ◽

Titanium Dioxide Thin Films

Sol–gel preparation method usually used to prepare the metal oxides. So, it is a rewarding process to prepare the electron selective film made of aluminum-doped titanium dioxide (Al-doped TiO2). The latter was used to fabricate the inverted organic solar cells P2HT:PCBM. The doping content with Al impact on the optical and morphological characteristics of each film were examined. These characteristics were analyzed depending on the magnified images of the prepared samples by atomic force microscopy (AFM), scanning electron microscopy (SEM), X-ray diffraction (XRD) in addition to the Uv-vis spectroscopic results. The outcomes revealed that the concentration of Al doping has potential influences on the optical properties, XRD results and surface morphology. The J–V curve characteristics of each solar cell utilizing Al–TiO2 film were analyzed and noticed that the most powerful conservation efficiency is 2.09% when using Al–TiO2 layer with 0.5 wt.% Al as a doping element.

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Исследование структуры объемного гетероперехода в полимерных солнечных элементах с помощью комбинации ультрамикротомирования и атомно-силовой микроскопии

Физика и техника полупроводников ◽

10.21883/ftp.2018.01.45328.8545 ◽

2018 ◽

Vol 52 (1) ◽

pp. 110

Author(s):

А.М. Алексеев ◽

A. Ал-Афееф ◽

Г.Д. Хедли ◽

С.С. Харинцев ◽

А.Е. Ефимов ◽

...

Keyword(s):

Atomic Force Microscopy ◽

Solar Cells ◽

Organic Solar Cells ◽

Polymer Solar Cells ◽

Structural Investigations ◽

Photoactive Layer ◽

Force Microscopy ◽

Atomic Force ◽

Bulk Structure ◽

Soft Samples

AbstractA method for visualization via atomic-force microscopy of the internal structure of photoactive layers of polymer solar cells using an ultramicrotome for photoactive layer cutting is proposed and applied. The method creates an opportunity to take advantage of atomic-force microscopy in structural investigations of the bulk of soft samples. Such advantages of atomic-force microscopy include a high contrast and the ability to measure various surface properties at nanometer resolution. Using the proposed method, samples of the photoactive layer of polymer solar cells based on a mixture of PTB7 polythiophene and PC_71BM fullerene derivatives are studied. The disclosed details of the bulk structure of this mixture allow us to draw additional conclusions about the effect of morphology on the efficiency of organic solar cells.

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Improving the charge carrier transport of organic solar cells by incorporating a deep energy level molecule

Physical Chemistry Chemical Physics ◽

10.1039/c6cp07344a ◽

2017 ◽

Vol 19 (1) ◽

pp. 245-250 ◽

Cited By ~ 12

Author(s):

Chunyu Liu ◽

Zhiqi Li ◽

Zhihui Zhang ◽

Xinyuan Zhang ◽

Liang Shen ◽

...

Keyword(s):

Solar Cells ◽

Energy Level ◽

Charge Carrier ◽

Organic Solar Cells ◽

Carrier Transport ◽

Polymer Solar Cells ◽

Device Performance ◽

Charge Carrier Transport ◽

P Type ◽

Tcnq Molecule

A p-type F4-TCNQ molecule was incorporated into the P3HT/ICBA active layer to enhance the device performance of polymer solar cells from 4.50% to 5.83%.

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In situ studies on the positive and negative effects of 1,8-diiodoctane on the device performance and morphology evolution of organic solar cells

Nuclear Science and Techniques ◽

10.1007/s41365-021-00893-z ◽

2021 ◽

Vol 32 (6) ◽

Author(s):

Da Huang ◽

Chun-Xia Hong ◽

Jian-Hua Han ◽

Nie Zhao ◽

Xiu-Hong Li ◽

...

Keyword(s):

Solar Cells ◽

Organic Solar Cells ◽

Device Performance ◽

Morphology Evolution ◽

Negative Effects ◽

In Situ Studies

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Alkyl-Side-Chain Engineering of Nonfused Nonfullerene Acceptors with Simultaneously Improved Material Solubility and Device Performance for Organic Solar Cells

ACS Omega ◽

10.1021/acsomega.0c04495 ◽

2021 ◽

Vol 6 (7) ◽

pp. 4562-4573

Author(s):

Taeho Lee ◽

Chang Eun Song ◽

Sang Kyu Lee ◽

Won Suk Shin ◽

Eunhee Lim

Keyword(s):

Solar Cells ◽

Organic Solar Cells ◽

Side Chain ◽

Device Performance ◽

Alkyl Side Chain

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A universal approach for optimizing charge extraction in electron transporting layer-free organic solar cells via Lewis base doping

Journal of Materials Chemistry A ◽

10.1039/c9ta10002d ◽

2019 ◽

Vol 7 (45) ◽

pp. 25808-25817

Author(s):

Rong Wang ◽

Boxin Wang ◽

Jianqiu Wang ◽

Xuning Zhang ◽

Dongyang Zhang ◽

...

Keyword(s):

Electron Transfer ◽

Solar Cells ◽

Organic Solar Cells ◽

Photovoltaic Device ◽

Lewis Base ◽

Device Performance ◽

Universal Approach ◽

Electron Transporting Layer ◽

Charge Extraction ◽

Base Doping

Applying anion-induced electron transfer doping with a series of TXABr salts to non-fullerene organic solar cells enables to tune the doping efficiency and photovoltaic device performance.

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