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Article
Publication date: 22 September 2021

Piotr Kowalik and Edyta Wróbel

This paper aims to present the possibility of computer-aided technology of chemical metallization for the production of electrodes and resistors based on Ni-P and Ni-Cu-P layers.

Abstract

Purpose

This paper aims to present the possibility of computer-aided technology of chemical metallization for the production of electrodes and resistors based on Ni-P and Ni-Cu-P layers.

Design/methodology/approach

Based on the calculated parameters of the process, test structures were made on an alumina substrate using the selective metallization method. Dependences of the surface resistance on the metallization time were made. These dependencies take into account the comparison of the calculations with the performed experiment.

Findings

The author created a convenient and easy-to-use tool for calculating basic Ni-P and Ni-Cu-P layer parameters, namely, surface resistance and temperature coefficient of resistance (TCR) of test resistor, based on chemical metallization parameters. The values are calculated for a given level of surface resistance of Ni-P and Ni-Cu-P layer and defined required range of changes of TCR of test resistor. The calculations are possible for surface resistance values in the range of 0.4 Ohm/square ÷ 2.5 Ohm/square. As a result of the experiment, surface resistances were obtained that practically coincide with the calculations made with the use of the program created by the authors. The quality of the structures made is very good.

Originality/value

To the best of the authors’ knowledge, the paper presents a new, unpublished method of manufacturing electrodes (resistors) on silicon, Al2O3 and low temperature co-fired ceramic substrates based on the authors developed computer program.

Details

Microelectronics International, vol. 38 no. 4
Type: Research Article
ISSN: 1356-5362

Keywords

Article
Publication date: 21 May 2019

Piotr Kowalik, Edyta Wrobel and Janusz Mazurkiewicz

The purpose of this paper is to present the possibility of technology of chemical metallization for the production of electrodes and resistors based on Ni–P alloy on silicon (Si)…

Abstract

Purpose

The purpose of this paper is to present the possibility of technology of chemical metallization for the production of electrodes and resistors based on Ni–P alloy on silicon (Si), alundum (Al2O3) and low temperature cofired ceramic (LTCC) substrates. The developed technology provides low cost in any form.

Design/methodology/approach

During the study monocrystalline Si plates and Al2O3 and LTCC substrates were used. On the surface of the substrates, the electrodes (resistors) by the electroless metallization were made. Subsequently, the electrical parameters of obtained structures were measured. Afterwards, trial soldering was made to demonstrate that the layer is fully soldered.

Findings

Optimal parameters of the metallization bath were specified. As a result of the research conducted, it has been stated that the most appropriate way leading to the production of soldered metal layers with good adhesion to the portion of selectively activated Si plate and Al2O3 and LTCC substrates comprises the following technology: masking, selective activation, nickel-plating of activated plate. Such obtained metal layers have a great variety of application; in particular they can be used for the preparation of electric contacts in Si solar cells, production of electrodes and resistors and production of electrodes in thermoelectric structures.

Originality/value

The paper presents a new, unpublished method of manufacturing electrodes (resistors) on Si plate and Al2O3 and LTCC substrates.

Details

Microelectronics International, vol. 36 no. 2
Type: Research Article
ISSN: 1356-5362

Keywords

Article
Publication date: 7 August 2017

Wojciech Filipowski, Zbigniew Pruszowski, Krzysztof Waczynski, Piotr Kowalik and Jan Kulawik

The paper aims to present a research on the impact of the stabilization process of a thin metallic layer (Ni-P) produced on a ceramic surface (Al2O3) by means of electroless…

Abstract

Purpose

The paper aims to present a research on the impact of the stabilization process of a thin metallic layer (Ni-P) produced on a ceramic surface (Al2O3) by means of electroless metallization on its electric parameters and structure. On the basis of the research conducted, the existence of a relationship between resistance (R) and the temperature coefficient of resistance (TCR) of the test structure with a Ni-P alloy-based layer and the temperature of stabilization was proposed.

Design/methodology/approach

Metallic Ni-P layers were deposited on sensitized and activated substrates. Metallization was conducted in an aqueous solution containing two primary ingredients: sodium hypophosphite and nickel chloride. The concentration of both ingredients was (50-70) g/dm3. The process lasted 60 min, and the metallization bath pH was kept at 2.1-2.2, whereas the temperature was maintained at 363 K. The thermal stabilization process was conducted in different temperatures between 453 and 623 K. After the technological processes, the resistance and TCR of the test structures were measured with a micro ohmmeter. The composition and the morphology of the resistive layer of the structures examined was also determined.

Findings

The dependence of the resistance on the temperature of the stabilization process for the temperature range 553 to 623 K was described using mathematical relationships. The TCR of test resistors at the same thermal stabilization temperature range was also described using a mathematical equation. The measurements show that the resistive layer contains 82.01 at.% of nickel (Ni) and 17.99 at.% of phosphorus (P).

Originality/value

The results associate a surface morphology Ni-P alloy with the resistance and TCR according to temperature stabilization. The paper presents mathematical relationships that have not been described in the literature available.

Details

Microelectronics International, vol. 34 no. 3
Type: Research Article
ISSN: 1356-5362

Keywords

Article
Publication date: 4 January 2016

Piotr Kowalik, Edyta Wrobel and Janusz Mazurkiewicz

This paper aims to present the results of measurements of the photovoltaic structures made by electroless selective metallization technology. The developed technology provides…

Abstract

Purpose

This paper aims to present the results of measurements of the photovoltaic structures made by electroless selective metallization technology. The developed technology provides low-cost contacts in any form, and parameters of photovoltaic cells made in this technology provide reliable results, comparable with those usually used.

Design/methodology/approach

In this paper, photovoltaic cells with contacts based on Nip and NiCuP alloy were performed. As a substrate, mono- and multicristaline silicon was used. After photovoltaic cells have been prepared, sheet resistance of the contact layers and electrical parameters were measured. Composition and structure of contact layers were also measured.

Findings

Obtained results of sheet resistance and contact layers are repeatable and comparable with previously published results. Electrical parameters of the photovoltaic cells made are comparable with used substrate and technologies. The authors have also noticed that the costs of the electroless metallization which is used to make contact layers is lower than metallization made by thick film or vacuum deposition technologies.

Originality/value

The paper presents new, unpublished results of electrical parameters of photovoltaic cells with contact layers made by electroless metallization. The original idea is the usage of metallization in an acidic solution (pH = 2). In this proposed technology, photovoltaic cells on mono- and multicrystalline silicon plates were performed.

Details

Microelectronics International, vol. 33 no. 1
Type: Research Article
ISSN: 1356-5362

Keywords

Article
Publication date: 5 January 2015

Edyta Wrobel, Piotr Kowalik and Janusz Mazurkiewicz

This paper aims to present the possibility of the technology of chemical metallization for the production of contact of photovoltaic cells. The developed technology allows you to…

Abstract

Purpose

This paper aims to present the possibility of the technology of chemical metallization for the production of contact of photovoltaic cells. The developed technology allows you to perform low-cost contacts in any form.

Design/methodology/approach

The study used a multi- and monocrystalline silicon plates. On the surface of the plates, the contact by the electroless metallization was made. After metallization stage, annealing process in a temperature range of 100-700°C was conducted to obtain ohmic contact in a semiconductor material. Subsequently, the electrical parameters of obtained structures were measured. Therefore, trial soldering was made, which demonstrated that the layer is fully soldered.

Findings

Optimal parameters of the metallization bath was specified. The equations RS = f (metallization time), RS = f (temperature of annealing) and C-V characteristics were determined. As a result of conducted research, it has been stated that the most appropriate way leading to the production of soldered metal layers with good adhesion to the portion of selectively activated silicon plate is technology presented below in the following steps: masking, selective activation and nickel-plating of activated plate. Such obtained metal layers have great variety in application and, in particular, can be used for the preparation of electric terminals in silicon solar cell.

Originality/value

The paper presents a new, unpublished method of manufacturing contacts in the structure of the photovoltaic cell.

Details

Microelectronics International, vol. 32 no. 1
Type: Research Article
ISSN: 1356-5362

Keywords

Article
Publication date: 27 September 2023

Mariola Ciszewska-Mlinarič, Dariusz Siemieniako and Piotr Wójcik

This paper contributes to studies on the relationship between dynamic capabilities (DCs) and performance by showing how domain-specific DCs – international dynamic marketing…

Abstract

Purpose

This paper contributes to studies on the relationship between dynamic capabilities (DCs) and performance by showing how domain-specific DCs – international dynamic marketing capabilities (IDMCs) – affect the international performance of exporting firms in the context of extreme environmental dynamism – during the COVID-19 pandemic.

Design/methodology/approach

The authors focus on a sample of 277 exporting manufacturers from the post-transition economy of Poland. The authors use hierarchical multiple regression analysis to test this study's hypotheses.

Findings

This study's findings show that deployment of IDMCs by export manufacturers in the context of environmental jolts contributes to better performance, and this relationship is mediated by adaptation to foreign markets and product development capability. Additionally, this study's results reveal that the significant and positive indirect effect of IDMCs on international performance (through mediators) is, however, weakened under conditions of extreme environmental dynamism.

Research limitations/implications

The limitations pertain to the cross-sectional nature of this study and the research sample, characterised by the dominance of export manufacturers of final products, the dominance of manufacturers operating in the business-to-business sector, or in the business-to-business and business-to-customer sectors simultaneously.

Practical implications

The study provides suggestions to managers on how to build resilience in international markets during turbulent times. These activities involve investments in IDMCs that support activities centred around product development and adaptation to foreign markets.

Originality/value

The novel construct of IDMCs is introduced and operationalized. The study empirically tests the direct and indirect relationship between IDMCs and performance contingent upon extreme environmental dynamism. The results demonstrate the boundary conditions for the effectiveness of these domain-specific DCs in such a research setting.

Details

International Marketing Review, vol. 41 no. 1
Type: Research Article
ISSN: 0265-1335

Keywords

Article
Publication date: 30 May 2018

Jan Czarzasty and Adam Mrozowicki

The purpose of this paper is to examine the interrelations between the evolution of industrial relations (IR) and IR research in Poland in the historical context. Two questions…

Abstract

Purpose

The purpose of this paper is to examine the interrelations between the evolution of industrial relations (IR) and IR research in Poland in the historical context. Two questions are put forward: How was the evolution of the IR system in Poland influenced by the re-constitution of a particular model of the capitalism and the strategies and struggle of IR actors? How were the ways of approaching and theorizing IR influenced by the aforementioned evolution?

Design/methodology/approach

The paper draws upon academic literature, secondary data on actors and processes of IR as well as four expert interviews with the representatives of the first generation of IR scholars in Poland.

Findings

The paper suggests that the development of the IR system and the related scholarship can be divided into three phases: the pre-1989 period characterised by the lack of autonomous interests representation and rather limited IR research; the early development of the post-1989 IR system marked by the debates on the integrative role of IR as peacekeeping mechanism in the period of deep economic and political changes (1989-2004); the post-EU accession consolidation of the IR system characterised by the weakness of the IR actors vis-à-vis the state and increasing neo-etatist tendencies.

Originality/value

This paper contributes to the ongoing debate on the relationships between the emergent models of Eastern European capitalism and the evolution of IR systems. It critically analyses the state of the discussion on the IR field Poland emphasising the relevance of political-economic factors as well as the ideology of “social peace” for both the evolution of the IR system in the country and the state of the IR debate.

Details

Employee Relations, vol. 40 no. 4
Type: Research Article
ISSN: 0142-5455

Keywords

Article
Publication date: 14 October 2013

Piotr Wygonik

The paper aims to present a way of engine model integration, an aircraft (multitask) and the mission into the single model that allows to study, from the level of selection of the…

2180

Abstract

Purpose

The paper aims to present a way of engine model integration, an aircraft (multitask) and the mission into the single model that allows to study, from the level of selection of the engine cycle parameters, the feasibility of a specific mission with the assumed aerodynamic characteristics exemplified by a multitask airplane.

Design/methodology/approach

There were introduced dimensionless geometric and energetic criteria, binding parameters of the engine and the airplane. The following models were built: of the turbofan engine and the aircraft movements with the application of these criteria, creating a dimensionless model allowing for measuring the impact of engine design parameters on the efficiency of the mission undertaken.

Findings

The results were limited to the presentation of the impact of circuit parameters, such as engine TIT, OPR, BR on the defined criteria. The application of dimensionless criteria reduced the dimension of the task.

Practical implications

The presented method can be useful for engineers involved in the task of engine integration and the airplane at the preliminary design stage.

Originality/value

The originality of the presented solutions is reduced to provide a different, unconventional approach to the design process and not (so far) the engine itself but the entire aviation system.

Details

Aircraft Engineering and Aerospace Technology, vol. 85 no. 6
Type: Research Article
ISSN: 0002-2667

Keywords

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