Two step sintering process and metal grid design optimization for highly efficient ITO free organic photovoltaics

Neophytou, Marios; Georgiou, Efthymios; Fyrillas, Marios M.; Choulis, Stelios A.

doi:10.1016/j.solmat.2013.11.021

Cited by 31 publications

(27 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The use of high or low conductivity PEDOT:PSS depends on the metal conductivity, the metal covered area, the grid design, and the device area. In our previous work, highly conductive Ag grid with 13% Ag covered area and low conductivity formulation Clevios PH PEDOT:PSS (0.01 S cm −1 ) efficiently replaced ITO . In our present study, we initially investigated the device performance of OPVs with Cu‐grid and two different PEDOT:PSS formulations with low (0.01 S cm −1 ) and high conductivity (200 S cm −1 ), respectively.…”

Section: Resultsmentioning

confidence: 99%

Printed Copper Nanoparticle Metal Grids for Cost‐Effective ITO‐Free Solution Processed Solar Cells

et al. 2018

Self Cite

View full text Add to dashboard Cite

Copper nanoparticle inks have drawn much attention since they have the potential to constitute an alternative cost‐effective solution than other noble metals nanoparticle inks such as Ag for indium tin oxide (ITO)‐free printed electronic applications. Our research and development efforts have produced high conductivity copper nanoparticle inks which have excellent jetting and printing properties resulting in high quality inkjet‐printed (IJP) Cu nanoparticle‐based metal grids. We present ITO‐free, Si‐PCPDTBT: PC[70]BM organic photovoltaics (OPVs) processed in ambient low‐cost fabrication conditions comprising for the first time embedded and non embedded inkjet‐printed copper grid/Poly(3,4‐ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) as the bottom electrode with power conversion efficiencies (PCE) of 2.56 and 3.35%, respectively. The results of the ITO‐free OPVs using inkjet‐printed Cu nanoparticle current collecting grids are discussed relevant to reference ITO‐based OPVs with PCE of 4.92%.

show abstract

Section: Resultsmentioning

confidence: 99%

Printed Copper Nanoparticle Metal Grids for Cost‐Effective ITO‐Free Solution Processed Solar Cells

et al. 2018

Self Cite

View full text Add to dashboard Cite

show abstract

“…Inkjet‐printing can also be transferred to a roll‐to‐roll (R2R) process, thereby accessing both a productivity of up to 6 m 2 min −1 and also small feature sizes (30–50 µm line/10 µm space) and a wide variety of shapes . Inkjet printing has been utilized in order to fabricate every component of an organic optoelectronic device, including the active layer materials and the metal top and transparent bottom electrodes . However, only very few devices have claimed to be wholly inkjet‐printed, paving the way for fully solution‐processed devices to become more widespread.…”

Section: The Printed Transparent Conductive Electrode In Organic Elecmentioning

confidence: 92%

“…These solutions can then be deposited using standard lab‐based techniques such as spin coating, but also using sophisticated, technology‐relevant processing systems such as inkjet‐printing or roll‐coating . Organic field effect transistors (OFETs), highly efficient organic photovoltaics (OPVs) and high‐performance OLEDs, have been fabricated using inkjet printing, thereby underlining the versatility of this printing method …”

Section: Introduction—solution Processed Organic Electronicsmentioning

confidence: 99%

Implementing Inkjet‐Printed Transparent Conductive Electrodes in Solution‐Processed Organic Electronics

Hermerschmidt

Choulis

List‐Kratochvil

2019

Adv Materials Technologies

Self Cite

View full text Add to dashboard Cite

Through the use of solution‐based materials, the field of printed organic electronics has not only made new devices accessible, but also allows the process of manufacture to move toward a high throughput industrial scale. However, while solution‐based active layer materials in these systems have been studied quite intensely, the printed electrodes and specifically the transparent conductive anode have only relatively recently been investigated. In this progress report, the use of metal nanoparticles within printed organic electronic devices is highlighted, specifically their use as replacement of the commonly used indium tin oxide transparent conductive electrode within organic photovoltaics (OPVs) and organic light emitting diodes (OLEDs). A cross fertilization between the applications is expected since an OPV device is essentially an inversely operated OLED. This report aims to highlight the use of inkjet‐printed nanoparticles as cost‐effective electrodes for printed optoelectronic applications and discusses methods to improve the conductive and interfacial properties. Finally, in an outlook, the use of these types of metal nanoparticle inks to manipulate light management properties, such as outcoupling, in the device is investigated.

show abstract

“…The shape of the pipes is assumed unknown and the main objective of this work is to find the shape that maximizes heat transfer. The particular configuration is a classical heat conduction problem that arises in connection with heating tubes, oil lines, steam distribution lines, underground electrical power-line transmission, laser sintering processes, in certain types of compact heat exchangers and solar cells [2][3][4][5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Heat transfer enhancement of a periodic array of isothermal pipes

Leontiou

Ikram

Beketayev

et al. 2016

International Journal of Thermal Sciences

Self Cite

View full text Add to dashboard Cite

We address the problem of two-dimensional heat conduction in a solid slab whose upper and lower surfaces are subjected to uniform convection. In the midsection of the slab there is a periodic array of isothermal pipes of general cross section. The main objective of this work is to find the optimum shapes of the pipes that maximize the Shape Factor (heat transport rate). The Shape Factor is obtained by transforming the periodic array of pipes into a periodic array of strips, using the generalized SchwarzChristoffel transformation, and applying the collocation boundary element method on the transformed domain. Subsequently we pose the inverse problem, i.e. finding the shape that maximizes the Shape factor given the perimeter of the pipes. For large Biot number the optimum shapes are in agreement with the isothermal case, i.e. circular for sufficiently small perimeters/heat transfer, and elongated towards the surfaces of the slab for larger perimeters/heat transfer. Furthermore, for the isothermal case, we were able to discover a new family of optimum shapes for large thickness of the slab and large * E-mail: t.leontiou@frederick.ac.cy † E-mail: magzhan.ikram@nu.edu.kz ‡ E-mail: kenes.beketayev@nu.edu.kz § Corresponding Author, e-mail: m.fyrillas@gmail.com 1 perimeters, which do not have their maximum width on the horizontal axis of symmetry.For small Biot number the optimum pipes are flatter than the isothermal ones for a given perimeter. The flatness becomes more apparent for larger perimeters. Most important, for large perimeters there exists a critical thickness which is characterized by maximum heat transfer rate. This is further investigated using the finite element method to obtain the critical thickness of a slab and the critical depth of the periodic array of circular pipes. KeywordsSolid slab with periodic array of pipes; Convective heat transfer; Laplace equation, generalized Schwarz-Christoffel transformation; Shape Optimization, Optimum shapes of pipes;Critical Thickness of slab, Critical depth of the pipes.

show abstract

Two step sintering process and metal grid design optimization for highly efficient ITO free organic photovoltaics

Cited by 31 publications

References 37 publications

Printed Copper Nanoparticle Metal Grids for Cost‐Effective ITO‐Free Solution Processed Solar Cells

Printed Copper Nanoparticle Metal Grids for Cost‐Effective ITO‐Free Solution Processed Solar Cells

Implementing Inkjet‐Printed Transparent Conductive Electrodes in Solution‐Processed Organic Electronics

Heat transfer enhancement of a periodic array of isothermal pipes

Contact Info

Product

Resources

About