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Development of Coinage Metal Chalcogenides Thin Films by Chemical Vapour Deposition Approach

Thesis Info

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Author

Zahra Ali

Program

PhD

Institute

Allama Iqbal Open University

City

Islamabad

Province

Islamabad

Country

Pakistan

Thesis Completing Year

2019

Thesis Completion Status

Completed

Subject

Chemistry

Language

English

Link

http://prr.hec.gov.pk/jspui/bitstream/123456789/12360/1/Zahra%20ali%20chemistry%202019%20aiou%20isb%20prr.pdf

Added

2021-02-17 19:49:13

Modified

2024-03-24 20:25:49

ARI ID

1676725871721

Similar


The work described here involves a detail AACVD study to observe and investigate overall morphological changes in copper, silver and nickel sulphide depositions from respective dithiocarbamate complexes on zinc oxide, bismuth and silver functionalized thin films at three different temperatures i.e. 300, 350, 400 оC. A variation in film thickness and color from black, brown, yellow and shiny dark grey was observed in copper, silver, nickel sulphide on all coated thin films. SEM images clearly indicated variations in morphology and different phases by XRD were observed with different UV analyzed nanoparticle coatings on substrate surface. In addition to above study, another scheme involving detailed investigation on effect of ligand substitution on metal sulphide depositions by synthesis and characterization of a set of N,N-disubstituted-N’-acylthiourea was done. Benzoyl and cinnamoyl chloride, and two secondary amines, diphenyl- and diisopropylamine were selectively used to derive L1, L2, L3, L4 ligands of completely characterized nickel complexes, Ni(L3)2 was found to have the lowest decomposition temperature and its thorough study revealed the most rapid mass loss occurring at 223 °C. L3 was selected for the synthesis and study of several other ML2 and ML3 complexes (M = Ni, Zn, Cd, Fe, Co, and Cu.) depending upon this detail study. The related complexes Ni(L3)2, Cu(L3)2, Co(L3)3, and Zn(L3)2 were all synthesized and found to crystalize in the cis-square planar, trans-square planar, fac-octahedral, and distorted tetrahedral geometries respectively. From AACVD, Ni(L3)2, Co(L3)3, and Zn(L3)2 at temperatures of 350 °C were found to deposit their corresponding metal sulfide but attempted depositions from tetrahydrofuran solution of Cu(L3)2 were not very successful due its low solubility. The viability of N,N-disubstituted-N’-acylthiourea ligands as sulfur sources in the AACVD of metal sulfides was demonstrated in these experiments.
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ڈاکٹر عبدالستار صدیقی

ڈاکٹر عبدالستار صدیقی
افسوس ہے پچھلے ماہ ڈاکٹر عبدالستار صاحب صدیقی کاالہٰ آباد میں انتقال ہوگیا۔ مرحوم ہندوستان کے ان مغربی تعلیم یافتہ اکابراساتذہ عربی وفارسی میں سے تھے جن کی نسل اب چراغ سحری ہے۔مرحوم علی گڑھ کے اس زمانے کے پڑھے ہوئے تھے جب کہ ابھی وہ صرف کالج تھا۔انہوں نے یہاں پروفیسر یوسف ہورووتس(JOSEF HOREVITZE)جو صدر شعبۂ عربی تھے ان کی شاگردی میں عربی میں ایم۔اے کیااور جب ان کوحکومت ہند کی جانب سے اعلیٰ تعلیم کے لیے وظیفہ ملا توموصوف کے ہی مشورے سے۱۹۱۲ء میں جرمنی چلے گئے۔اس زمانے میں جہاں تک عربی اور فارسی میں ریسرچ کاتعلق ہے فرانس کے ساتھ جرمنی کے نام کابھی دنیا میں غلغلہ بلند تھا۔جرمنی میں جو مستشرقین علم و تحقیق کے جوئے شیر کے کوہکن مشہور تھے ان میں پروفیسر تھیوڈور نولڈیکی اورپروفیسر انولتمان(ENNO LITTMAN)(۱۸۷۵ء۔۱۹۵۸ء) سرخیل گروہ تھے۔ان دونوں کااورخصوصاً موخرالذکر کاخاص فن سامی لسانیات تھا۔خوش قسمتی سے مرحوم کوجرمنی میں ان اساتذہ سے استفادہ کاپورا موقع ملا۔پروفیسر انولتمان ان کے استاد خصوصی تھے۔جن کی خدمت میں وہ مسلسل سات برس یعنی۱۹۱۹ء تک رہے۔استاد نہایت شفیق اورعلم وتحقیق کے بحر ناپیداکنار کا کامیاب شناور اور شاگرد نہایت ذہین اورہمہ طلب وجستجو! پھر کمی کس چیز کی تھی۔ڈاکٹر عبدالستار صدیقی نے فن لسانیات میں وہ کمال پیداکیا کہ یورپ تک میں مشہور ہوگئے۔ جرمنی سے آنے کے بعد وہ علی گڑھ،حیدرآباد اورڈھاکہ رہے لیکن آخرکار الہٰ آباد یونیورسٹی میں عربی کے پروفیسر اورصدر شعبۂ کی حیثیت سے ایسے جمے کہ یہیں سے ۱۹۴۶ء میں ریٹائرڈ ہوئے اوریہیں مستقل طورپررہ پڑے۔اپنے علم و فضل اورلسانیات میں خصوصی وسعت وقت نظر کے باعث جامعات اورارباب علم کے حلقوں میں بڑی وقعت کی نگاہ سے دیکھے جاتے تھے جرمنی زبان میں ان کے مقالہ فضیلت کے علاوہ غالباً کوئی مستقل تصنیف ان کی یادگار نہیں ہے۔تاہم جو مضامین(عربی کے علاوہ...

پاکستان میں غیر مسلموں کے جان و مال کا تحفظ، قرآن وسنت کی روشنی میں خصوصی مطالعہ

This fact is quite obvious from Quran o Sunnah that Islam is a religion of peace and provides guarantee of protection of life, property and self respect to the all members of society without any discrimination of colour, race and religion. It is the duty of an Islamic State to provide protection to the basic rights of all minorities. Holy Prophetﷺ said: "Beware! Whoever is cruel and harsh to a non-muslims minority, curtailing their rights, overburdening them or stealing from them, I will complain (to God) about that person on the day of judgement." Islam seeks to establish such a society where all citizens of the state enjoy equal rights and religion doesn't become the basis from any discrimination. Islamic law holds both muslims and non-muslims equal and no superiority or privilege is given to the muslims on any ground.

Pakistani Society and Challenges of Women Empowerment 1988-2000

Pakistani Society has a rigid, male dominated social structure and is divided into rural, urban and suburban areas. In Pakistan gender discrimination is visible in all fields of life. The struggle of women for their rights got a new shape of emergence during the feminist movements in the beginning of 20th century. Then the movement changed into struggle of women empowerment and it took new pace. The word ‘empowerment of women’ has different meanings for different people and its importance varies subject to the social, cultural, political, ideological and geographic scenario with respect to geological areas. Women’s rights were exploited and violated in Pakistan and women in the society raised their voices for change in their lives. In Pakistani patriarchal society, women are restricted in mobility, their participation in paid jobs is limited, and their economic independence is suffering. In a joint family system in Pakistan, women are also not enjoying the same status as that of men and they are considered an entity of second priority. So, there is a need of empowerment of women for elevation of their status in the society and in the family. Due to its importance the empowerment of women is one of the most debatable issues in Pakistan. Pakistan claims a democratic Islamic state. In social sector, especially in education and health, there is gender gap and women in Pakistan are not getting proper share according to their population. Education is an important factor in the empowerment of women but in Pakistan large majority of women is not getting proper education due to the ignorance. Constructed social norms in the society are also big causes of the deprivation of women about their basic rights. In the political field, share of women is low that means the women have limited authority in the process of decision making. Legal system of Pakistan and available land laws are also not sufficient to protect the women’s rights and implementations of these laws are not done judicially. Under these laws and structured norms of the society, women are trying to get space in the available and constructed social structure. All these conditions in Pakistan and deprivation of women in their rights were source of inspiration of this study. Objective of the present study was to find out the possibilities and opportunities for the empowerment of women in Pakistani Society. A survey from all over Pakistan including all provinces and Gilgit Baltistan was conducted. 600 people were included as sample of the study. Objective of the survey was to find the social, political and economical empowerment of women during the era 1988-2000. The instruments of the study comprised a Likert type questionnaire, and documentary analyses of the data of national elections held in 1988, 1990, 1993, and 1997. From data analysis, it was found that during this era women were deprived from their basic rights and they did not have proper position in the society. There was no sex difference in the opinion and both male and female members of the society observed that the level of women empowerment was at low point. In the four general elections held in Pakistan during the period under study women also participated on general seats. Analysis of the study revealed that participation of women in political process was low and was not in accordance with their population. Even the reserved seats for women were abolished during the said period.