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Porous silicon (Si) was fabricated by using three different wet etching methods, namely, direct current photo-assisted electrochemical (DCPEC), alternating CPEC (ACPEC) and two-step ACPEC etching. This study aims to investigate the structural properties of porous structures formed by using these etching methods and to identify which etching method works best.

Si n(100) was used to fabricate porous Si using three different etching methods (DCPEC, ACPEC and two-step ACPEC). All the samples were etched with the same current density and etching duration. The samples were etched by using hydrofluoric acid-based electrolytes under the illumination of an incandescent lamp.

Field emission scanning electron microscopy (FESEM) images showed that porous Si etched using the two-step ACPEC method has a higher porosity and density than porous Si etched using DCPEC and ACPEC. The atomic force microscopy results supported the FESEM results showing that porous Si etched using the two-step ACPEC method has the highest surface roughness relative to the samples produced using the other two methods. High resolution X-ray diffraction revealed that porous Si produced through two-step ACPEC has the highest peak intensity out of the three porous Si samples suggesting an improvement in pore uniformity with a better crystalline quality.

Two-step ACPEC method is a fairly new etching method and many of its fundamental properties are yet to be established. This work presents a comparison of the effect of these three different etching methods on the structural properties of Si. The results obtained indicated that the two-step ACPEC method produced an etched sample with a higher porosity, pore density, surface roughness, improvement in uniformity of pores and better crystalline quality than the other etching methods.

The purpose of this paper is to describe a very low‐cost way to prepare Ge nano/microstructures by means of filling the material inside porous silicon (PS) using a conventional and cost effective technique in which thermal evaporator with PS acts as patterned substrate. Also, the potential metal‐semiconductor‐metal (MSM) photodetector IV characteristics of the structure are demonstrated.

PS was prepared by anodization of Si wafer in ethanoic hydrofluoric acid. The Ge layer was then deposited onto the PS by thermal evaporation. The process was completed by Ni metal deposition using thermal evaporator followed by metal annealing of 400°C for 10 min. Structural analysis of the samples was performed using energy dispersive X‐ray analysis (EDX), scanning electron microscope (SEM), X‐ray diffraction (XRD) and Raman spectroscopy.

A uniform circular network distribution of pores is observed with sizes estimation of 100 nm to 2.5 μm by SEM. Also observed are clusters with near spherical shape clinging around the pores believed to be Ge or GeO₂. The EDX spectrum suggests the presence of Ge or GeO₂ on and inside the pore structure. Raman spectrum showed that good crystalline structure of the Ge can be produced inside the silicon pores. XRD showed the presence of a Ge phase with the diamond structure by (111), (220), and (400) reflections. Finally, current‐voltage (I‐V) measurement of the Si/Ge/PS MSM photodetector was carried out. It showed lower dark currents compared to control device of Si. The device showed enhanced current gain compared to conventional Si device which can be associated with the presence of Ge nanostructures in the PS.

This paper shows that it is possible to grow Ge nano/microstructure on PS by using a simple and low‐cost method of thermal evaporation and thermal annealing and demonstrates potential MSM photodetector IV characteristics from the device.

The non-achievement of projects of best value remains a perennial problem within the construction industry. This paper aims to identify the latent shortcomings affecting the achievement of value for money (VfM) within the Ghanaian construction industry.

From a comprehensive literature review and pilot survey, 18 variables responsible for the non-achievement of VfM were identified. Through purposive and snowballing sampling techniques, a questionnaire was administered to the target professionals. Factor analysis was used to establish the latent shortcomings underlying the same dimensions of VfM achievement in the Ghanaian construction industry.

A total of six components were identified and explained as external factors; institutional culture and policy constraints; technical and decision-making factors; human-related factors and accountability and transparency constraints. The relative importance index was used in analysing the strategies to addressing the shortcomings.

The prevalent situation of poorly delivered projects and the continuous campaign for VfM necessitated the need for a study into explaining the latent shortcomings in achieving VfM within the Ghanaian construction industry. It is recommended that governments give VfM in public projects serious attention. This would help to reduce the overall cost of construction projects without compromising quality. When VfM is taken seriously, governments can save more money and undertake more projects as well as gain public acceptance in terms of transparency and accountability.

This study has set the pace for further research in the VfM analysis by identifying the latent shortcoming, which other developing countries can emulate.

Notwithstanding that numerous studies have focused on strategy in quantity surveying (QS) professional service firms, there is a paucity of investigation on the segmentation of QS professional services. The purpose of this study is to investigate the segmentation of QS services for diversification and a focus strategy formation.

This study adopts the positivist stance and quantitative approach in which a simple random sampling technique was used to select participants. In total, 110 survey questionnaires were administered to registered professional QS, out of which 79 completed questionnaires were returned for analysis.

The paper identifies three main QS service segments characterised by low, moderate and high competition. In addition, this study found that the concentration of traditional QS services in the building construction sector is due to the unwillingness of QS professional service firms to diversify into the non-construction sectors such as oil and gas. The diversification of QS services in the low competitive segment requires the adoption of agile approaches.

The study was limited to numeric analyses and so would be complemented by qualitative research in the future.

This paper is useful to QS professional service firms interested in diversifying their services into the non-construction sectors to enhance the pricing of their services.

Segmentation of QS services is fundamental to the formulation of focus strategy for non-construction sectors such as oil and gas and mining to enhance the pricing of QS professional services.

Price fairness is important amongst construction and engineering consultants because a perceived lack of it engenders unwillingness to pay amongst clients. This can create contractual disputes that negatively impact upon a consultant’s ability to generate sufficient revenue to ensure business continuity and survival. With this in mind, this research aims to analyse the pricing measurement forces needed to attain pricing fairness within a Ghanaian construction cost consultancy practice. Specific objectives are to identify the key variables responsible for price fairness within cost consultant services and to establish any interrelationships between them.

This study leans towards the positivist methodological tradition by adopting a quantitative approach. A survey questionnaire was distributed to a random sample of 79 construction cost consultancies, drawn from a population of 372, who were registered with the Ghana Institution of Surveyors. Hypotheses developed from the literature review were then tested on data collected.

The analysis revealed that fairness of construction cost consultancy services pricing is significantly related to value and affordability, pricing objectives, pricing strategies, taxes and international trade and its effects on inputs for construction cost consultancy services.

The paper advances knowledge by providing a basis for the consideration of pricing forces in the valuing of construction cost consultancy services which hitherto has not been the case.

This article examines the experiences of women leaders and their challenges in Brunei Darussalam. Globally, women are underrepresented in leadership positions. Though the Brunei government does not discriminate against any gender in delivering free education, medical facilities and healthcare, women in leadership positions are as well underrepresented. I try to understand the factors that challenge as well as motivate women to become leaders in Brunei. For this research, I conducted qualitative interviews with some respondents selected purposively. The study results show that women leaders in Brunei face challenges in obtaining financial support and accessing resources. Despite the challenges, there are some women who have been assuming and excelling in their leadership roles. The study identified that personal strengths have also been critical in contributing to their successful leadership.

After completion of the case study, students are expected to demonstrate understanding of the process of strategy formulation (which include conducting situational analysis) and strategy implementation.

Perusahaan Azan, which trades under the brand name Roti Azan for its fresh bread and Azan for its dry bread or rusks, was established as a family business in 1968 by Haji Abu Bakar bin Ali in his hometown in Kuala Pilah, in the state of Negeri Sembilan in Malaysia. In the mid-1980s, the management of the business was passed on by Haji Abu Bakar to one of his sons, Haji Mohd Ghazali bin Haji Abu Bakar. Haji Ghazali was named managing director in 1985 and officially inherited his father’s company in 1987. By 2004, Perusahaan Azan breads had started to penetrate major grocery stores nationwide, and later the business began to expand internationally in 2010, with Oman and Iraq among the first countries it ventured into. The company sold both its fresh and dry bread in local stores; however, in the international market, only dry bread types were sold, specifically wholemeal rusks and long rusks, which had longer shelf lives. Post-pandemic, by 2022, the company had exited the retail fresh bread market and had focused only on its contractual fresh bread and retail dry bread markets. He thought about the main strategic choices he had of going forward, either to revive its retail fresh bread segment or venture into a coffee shop business. The former was the bread and butter of the company in the last 50 years. However, he knew that re-entering this market was getting more difficult, as it requires competing head-to-head with the giant breadmakers. There were also issues of rising costs and high wastage. For the latter coffee shop project, the company did not have experience in directly “serving” the customers, with its businesses so far had been mainly in production. He pondered on the best decision to undertake to sustain the company’s profitability into the next generation. Few family businesses can pass this crucial stage. He knew he had to act fast to ensure that the company’s plans for the future could be successfully implemented. The case study is suitable for use in teaching courses in strategic management, organisational management and integrated case study for advanced undergraduates and postgraduates in the programmes of business administration, Muamalat administration and accounting.

The case study is suitable for use in advanced undergraduate students in management, business administration, Muamalat administration and postgraduate students in MBA, Master in Muamalat Administration or other related master’s programmes with a course in strategic management, organisational management and integrated case study.

Teaching notes are available for educators only.

CSS 11: Strategy.

This study aims to investigate the effects of indium composition on surface morphology and optical properties of indium gallium nitride on gallium nitride (InGaN/GaN) heterostructures.

The InGaN/GaN heterostructures were grown on flat sapphire substrates using a metal-organic chemical vapour deposition reactor with a trimethylindium flow rate of 368  sccm. The indium composition of the InGaN epilayers was controlled by applying different substrate temperatures. The surface morphology and topography were observed using field emission scanning electron microscope (F.E.I. Nova NanoSEM 450) and atomic force microscopy (Bruker Dimension Edge) with a scanning area of 10 µm × 10 µm, respectively. The compositional analysis was done by Energy Dispersive X-Ray Analysis. Finally, the ultraviolet-visible (UV-Vis) spectrophotometer (Agilent Technology Cary Series UV-Vis-near-infrared spectrometer) was measured from 200 nm to 1500 nm to investigate the optical properties of the samples.

The InGaN/GaN thin films have been successfully grown at three different substrate temperatures. The indium composition reduced as the temperature increased. At 760 C, the highest indium composition was obtained, 21.17%. This result was acquired from the simulation fitting of ω−2θ scan on (0002) plane using LEPTOS software by Bruker D8 Discover. The InGaN/GaN shows significantly different surface morphologies and topographies as the indium composition increases. The thickness of InGaN epilayers of the structure was ∼300 nm estimated from the field emission scanning electron microscopy. The energy bandgap of the InGaN was 2.54 eV – 2.79 eV measured by UV-Vis measurements.

It can be seen from this work that changes in substrate temperature can affect the indium composition. From all the results obtained, this work can be helpful towards efficiency improvement in solar cell applications.

The purpose of this study is to integrate and synthesize the Islamic marketing literature, understand the phenomenon and related concepts and provide suggestions for future research.

The study uses an integrative review method that emphasizes summarizing and synthesizing the previous literature related to a phenomenon.

The findings indicate the emergence of five major themes, namely, Islamic marketing and its perspectives, activities in Islamic marketing, opportunities, controversies and challenges in Islamic marketing, Islamic principles and determinants of consumers’ behavior and awareness toward Islamic products. Each of the major themes consists of sub-themes discussed in detail in the results and discussion sections.

Like other studies, this integrative literature review has some limitations. These include the methodology undertaken, the lack of explanation of inter-relationship among themes and lack of Islamic theory-based review. These limitations lead to future research directions.

Marketing managers need a thorough understanding of the Islamic standards and need to develop strategies. Further, there are inter-differences among Muslims, which need to be thoroughly understood by managers. Moreover, marketers can effectively use advertising in creating awareness and increasing demand of halal products.

This study provides an integrative review of the literature and synthesizes the Islamic marketing literature, which has not been done before.