Search or add a thesis

Advanced Search (Beta)
Home > Opto-Electronic Response of Spinel Compounds Through Modified Becke-Johnson Exchange Potential

Opto-Electronic Response of Spinel Compounds Through Modified Becke-Johnson Exchange Potential

Thesis Info

Access Option

External Link

Author

Manzar Ali

Program

PhD

Institute

Hazara University

City

Mansehra

Province

KPK

Country

Pakistan

Thesis Completing Year

2015

Thesis Completion Status

Completed

Subject

Physics

Language

English

Link

http://prr.hec.gov.pk/jspui/bitstream/123456789/12997/1/Manzar%20Ali_Phy_2015_Hazara_Main%20part.pdf

Added

2021-02-17 19:49:13

Modified

2024-03-24 20:25:49

ARI ID

1676726825647

Similar


Theoritical Study is carried out on some of the Spinel compounds. These compounds have wide range applications in various optoelectronic devices, industries and ornamental purposes being natural gem stones. For the better performance and practical applications of these Spinel compounds the newly suggested approximation is used known as the "modified Becke-Johnson potential approximation (mBJ)" as presented in the Wien2K computer package which is commercially available. The optoelectronic responses of SnX2O4 (X= Mg, Zn), MgIn2O4, SiZn2O4, GeX2O4 (X= Mg, Cd) and CdX2O4 (X= In, Ga, Al) are calculated and presented. The calculated total and partial density of states of the studied compounds within only the mBJ approximation is a prototype since the patterns of the density of states for all approximations are almost similar to each other. In MgIn2O4 charge distribution between the cation and anions is uniform; hence the bonding nature is mainly covalent. Electron effective masses of CdX2O4 are calculated, CdGa2O4 has higher mobility of charge carriers as compared to CdAl2O4 and CdIn2O4. A unique character of cation replacement is observed in these compounds. If we replace the cation in all of the above studied compounds the band gap and its dependent optical parameters change which demonstrate the wide range applicability and appropriateness of these compounds in various optoelectronic instruments. All of the herein studied materials are found to have direct band gaps and hence most suitable for optoelectronic instruments.
Loading...
Loading...

Similar Books

Loading...

Similar Chapters

Loading...

Similar News

Loading...

Similar Articles

Loading...

Similar Article Headings

Loading...

اب انھیں ڈھونڈ چراغِ رخِ زیبا لے کر

اب انہیں ڈھونڈ چراغِ رخِ زیبا لے کر

آغا شورش کا شمیری ایک دن بھٹو صاحب کے پاس گئے تو بھٹو مرحوم نے کہا :آکسفورڈ یونیورسٹی میں میری لڑکی اور لڑکا دو نوں پڑھتے تھے ۔آپ بھی اپنی لڑکی اور لڑکے کو بھیج دو ،حکومت وظیفہ دے گی ۔

شورش نے کہا میں مشرقی طرزکا آ دمی ہوں ۔مغربی تہذیب میں اولاد کو بھیج کر خراب نہیں کر نا چاہتا ۔

تو بھٹو مرحوم نے کہا کہ شادمان کا لونی ،لاہورمیں دو پلاٹ پڑے ہیں ،تم کم ریٹ پر حکومت سے خرید لو اور ایک کو بیچ کر اپنا پلاٹ بنا لو ۔تو شورش نے جواب دیا :جناب سر چھپانے کے لیے جگہ موجود ہے ۔میں کوٹھی نہیں بنا نا چاہتا ۔

شورش اپنے گھر واپس آئے اور سارا قصہ اپنی بیٹی کو سنا دیا ۔تو بیٹی نے کہا کہ :ابو بھٹو صاحب پلاٹ دے رہے تھے تو لے لیتے ،سرکاری زمین ہے ہم پیسے جمع کرا دیتے ہیں بات صرف اتنی ہے کہ وہ کوئی اور لے جائے گا ۔بس ہمیں رعایت ہی مل جاتی ۔آپ نے ہمارے مستقبل کے ساتھ زیادتی کی ہے ۔

تو جواب میں شورشؒ نے فرمایا کہ :دنیا یہیں رہ جائے گی ۔میں بھٹو صاحب سے ایک ایسا تحفہ لے کر آ یا ہوں جو قبر میں مجھے کام آئے گا بس یہ بات کہنی تھی ۔

تحریک ختم نبوت کے اکابرین بھٹو مرحوم اور شورش ؒ کے درمیان کی گفتگو سے بالکل ہی لا علم تھے ۔کچھ ہی دنوں بعد شورشؒ بیمار ہوئے اور انتقال فر ما گئے ۔جنازے میں حضرت مفتی محمود صاحب ؒ مولانا غلام غوث ہزاروی ؒ ،مصطفی کھر ،کوثر نیازی ،معراج خالد ،حفیظ پیرزادہ اور دیگر حضرات شریک...

کسب حلال کی راہ میں حائل معاشرتی رکاوٹیں: قرآنی نکتہ نظر سے ایک تجزیاتی مطالعہ

Earning lawful is considered as a worship in the Holy Quran and traditions of Holy Prophet (Peace Be Upon Him). But unfortunately, it has become very difficult to earn halal in present age due so many obstacles into the society. The purpose of this research article is to uncover the social obstacles and hurdles in the way of lawful earning. Qualitative and descriptive research approach is employed for the collection, demonstration, and analysis of data. The review of literature revealed that there are so many hurdles in the society in the way of halal earning. For instance, Wrong wishes of lowerself, lust, bad social practices, influence of media are the most common among them. It is therefore recommended that Quranic messures should be taken in order to diminish these obstacles and to make the way of lawful earning easy.

Exploring the Post Wsip Experiences of a Government and a Private School Headteacher in the Northern Areas of Pakistan

This thesis reports a study conducted in Northern Areas of Pakistan. The purpose of the study is to explore the WSIP experiences of a government and a private school head teacher. A qualitative case study method was used to investigate the subject matter. The participants were selected on the basis of pre-determined criteria that they have participated in WSIP intervention, worked for at least one year after completion of programme and successfully implemented their WSIP learning in their schools. The findings of the study showed that WSIP intervention has been instrumental in bringing about a significant effect on the professional approaches of head teachers. It was depicted in their attitudinal changes towards their roles and improvement in professional capabilities. By modifying their attitudes, they have realised the importance of community participation, team building approach and outcomes of encouraging teachers. They are sensitised towards students' learning and their developmental needs. To meet students' needs, they have brought about visible changes in their routine practices. They include initiation of portfolios, creation of learning environment in the classrooms which focuses on maximum students' participation and introduction of new assessment procedures. They have developed their professional capacities through improving presentation skills, observatory skills, motivational skills, and improvements in reflective practices. Since the role of head teacher is directly associated with all the stakeholders of a school community, and success of any initiation depends upon active involvement of head teacher, therefore the study recommends that this aspect must be given more attention to further strengthen the timely needed capabilities of head teachers. This ultimately can maximise students' performance through developed head teacher’s approaches for effective involvement of all the stakeholders in school improvement matters.