Farida Ashraf Ali, Gouranga Bose, Sushanta Kumar Kamilla, Dilip Kumar Mishra and Priyabrata Pattanaik
The purpose of this paper is to examine the growth and characterization of the two different compound semiconductors, namely, n-zinc oxide (ZnO) and p-gallium antimonide (GaSb)…
Abstract
Purpose
The purpose of this paper is to examine the growth and characterization of the two different compound semiconductors, namely, n-zinc oxide (ZnO) and p-gallium antimonide (GaSb). In this paper, fabrication and characterization of n-ZnO/p-GaSb heterojunction diode is analyzed.
Design/methodology/approach
Thermo vertical direction solidification (TVDS) method was used to synthesize undoped GaSb ingot from high purity Ga (5N) and Sb (4N) host materials. Thermal evaporation technique is used to prepare a film of GaSb on glass substrate from the pre-synthesized bulk material by TVDS method. Undoped ZnO film was grown on GaSb film by sol–gel method by using chemical wet and dry (CWD) technique to fabricate n-ZnO/p-GaSb heterojunction diode.
Findings
The formation of crystalline structure and surface morphological analysis of both the GaSb bulk and film have been carried out by x-ray diffraction (XRD) analysis and scanning electron microscopy analysis. From the XRD studies, the structural characterization and phase identification of ZnO/GaSb interface. The current–voltage characteristic of the n-ZnO/p-GaSb heterostructure is found to be rectifying in nature.
Originality/value
GaSb film growth on any substrate by thermal evaporation method taking a small piece of the sample from the pre-synthesized GaSb bulk ingot has not been reported yet. Semiconductor device with heterojunction diode by using two different semiconductors such as ZnO/GaSb was used by this group for the first time.
Details
Keywords
Nandani Yadav and Priyabrata Sahoo
The chapter examines the employment status of women in the power loom sector by assessing their participation in this sector as well as in different major activities aside from…
Abstract
The chapter examines the employment status of women in the power loom sector by assessing their participation in this sector as well as in different major activities aside from power loom activities. The objective is to understand the time allocation of individuals who are related to the power loom sector and to evaluate the factors that affect the time spent in the sector. It has focused on women’s contribution to the power loom sector and discusses gender inequality in unpaid domestic chores. The study is based on primary data collected through in-depth interviews in the rural area of Benipur, Varanasi, Uttar Pradesh. This study found that women participate less than men across all age groups in the power-loom sector in the rural area of Benipur. Women have lower education qualifications than men at each level; however, they are more involved in education than men in their initial years of schooling. Women’s involvement in education declines with age, while men’s involvement does not. Due to low educational attainment, they face many difficulties in understanding this new technology of power loom. Domestic involvement of women might be a major reason behind their low participation in education as well as the power loom sector. Even today, ‘farming or agriculture’ is the most important major alternate activity for the livelihood of the people who are related to the power-loom sector. The key contribution of this chapter is to understand the employment status of women and evaluate the women’s contributions to the power loom sector.