Search results

1 – 2 of 2
Per page
102050
Citations:
Loading...
Access Restricted. View access options
Article
Publication date: 16 January 2020

Alhan Farhanah Abd Rahim, Aida Azrenda Mustakim, Nurul Syuhadah Mohd Razali, Ainorkhilah Mahmood, Rosfariza Radzali, Ahmad Sabirin Zoolfakar and Yusnita Mohd Ali

Porous silicon (PS) was successfully fabricated using an alternating current photo-assisted electrochemical etching (ACPEC) technique. This study aims to compare the effect of…

90

Abstract

Purpose

Porous silicon (PS) was successfully fabricated using an alternating current photo-assisted electrochemical etching (ACPEC) technique. This study aims to compare the effect of different crystal orientation of Si n(100) and n(111) on the structural and optical characteristics of the PS.

Design/methodology/approach

PS was fabricated using ACPEC etching with a current density of J = 10 mA/cm2 and etching time of 30 min. The PS samples denoted by PS100 and PS111 were etched using HF-based solution under the illumination of an incandescent white light.

Findings

FESEM images showed that the porous structure of PS100 was a uniform circular shape with higher density and porosity than PS111. In addition, the AFM indicated that the surface roughness of porous n(100) was less than porous n(111). Raman spectra of the PS samples showed a stronger peak with FWHM of 4.211 cm−1 and redshift of 1.093 cm−1. High resolution X-ray diffraction revealed cubic Si phases in the PS samples with tensile strain for porous n(100) and compressive strain for porous n(111). Photoluminescence observation of porous n(100) and porous n(111) displayed significant visible emissions at 651.97 nm (Eg = 190eV) and 640.89 nm (Eg = 1.93 eV) which was because of the nano-structure size of silicon through the quantum confinement effect. The size of Si nanostructures was approximately 8 nm from a quantized state effective mass theory.

Originality/value

The work presented crystal orientation dependence of Si n(100) and n(111) for the formation of uniform and denser PS using new ACPEC technique for potential visible optoelectronic application. The ACPEC technique has effectively formed good structural and optical characteristics of PS.

Details

Microelectronics International, vol. 37 no. 1
Type: Research Article
ISSN: 1356-5362

Keywords

Access Restricted. View access options
Article
Publication date: 6 September 2024

Muhammad Junaid Ahsan

This quantitative study, rooted in the resource-based view (RBV) theory, aims to investigate the relationships among green transformational leadership, green process innovation…

253

Abstract

Purpose

This quantitative study, rooted in the resource-based view (RBV) theory, aims to investigate the relationships among green transformational leadership, green process innovation, employee environmental beliefs and firm environmental performance in Italian manufacturing companies. This study unfolds a nuanced narrative of how strategic green transformational leadership, coupled with environmentally conscious processes, can synergistically enhance an organization's overall environmental performance.

Design/methodology/approach

The multi-item survey questionnaire used in this study was distributed to leaders in a diverse sample of Italian companies. A total of 296 valid responses were obtained from the surveys. The collected data were analysed using statistical methods such as correlation, confirmatory factor and structural equation modelling using SPSS software.

Findings

The direct influence of green transformational leadership on firm environmental performance is supported. It also confirms the positive impact of green process innovation on environmental outcomes. It identifies green process innovation as a mediator between green transformational leadership and firm environmental performance, and employee environmental beliefs moderate the link between green transformational leadership and firm environmental performance.

Research limitations/implications

This research contributes by advancing understanding within the RBV framework by elucidating the specific mechanisms through which green transformational leadership programs promote green process innovation, enhance environmental performance for organizational success, achieve sustainability goals and foster collaboration and stakeholder engagement.

Practical implications

This study emphasizes the significance of establishing green leadership programs, encouraging green process innovation and systematically monitoring environmental performance to accomplish organizational success and sustainability goals.

Originality/value

This study presents a novel and original examination by integrating the RBV theory on the relationships between green transformational leadership, green process innovation and firm environmental performance, shedding new light on the role of employee environmental beliefs.

Details

International Journal of Organizational Analysis, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1934-8835

Keywords

1 – 2 of 2
Per page
102050