Enhancing the Photo-oxidative Stability of Non-Fullerene Electron Acceptors

الموضوعات

علوم بحتة وطبيعية

الملخص

Even though improvements in the efficiency of organic solar cells encouraged thecommercialization of this technology in the past two decades, the stability of organic solarcells is still an active area of research. The effect of photo-oxidative degradation on theperformance of organic solar cell devices is significant. One way to lower the rate of photooxidationdegradation is by preventing oxygen molecules from reaching the active layer oforganic solar cells. This could be achieved by fabricating the devices in an inertenvironment in the absence of oxygen. Once the devices are fabricated, they would been capsulated in a transparent material.1, 2 Even though this is a viable solution, there aretwo main issues. First, it was shown that oxygen molecules could diffuse through theencapsulating material and degrade the devices.3 Second, implementing this solution wouldincrease the fabrication cost of these devices, which would make this solutioncommercially unfeasible compared to other solar cell technologies.3 Speller and hiscolleges reported a possible mechanism of the photo-oxidative degradation and showed arelationship between the rate of degradation and LUMO energy levels of electron acceptormolecule4. In this thesis, we report the photo-oxidative degradation rate of O-IDTBR andO-IDTBR-(C3N2)2. The later electron acceptor is analogous to O-IDTBR with deeperLUMO by 0.1 eV. After four hours of constant irradiation from a 1-sun intensity xenonsolar simulator, the maximum UV-Vis absorbance of O-IDTBR is reduced by 12% relativeto O-IDTBR-(C3N2)2. Lower absolute degradation rates were observed when 1-sun LEDsolar simulator was used compare to xenon solar simulator.

روابط وملفات

التعريف والنوع

رقم الوثيقة

0d7cd2e7-85ee-45c4-beef-e97ed8f58c77

رقم العقد

0

نوع الوسائط

Crawler

نوع المحتوى

الرسائل العلمية

صيغة المصدر

رسائل ماجيستير

نوع الملف

word

أسماء الملفات

1698286_1.pdf

بيانات النشر

ألقاب المؤلفين

[{"name_ar":"ايان ماكولوتش","title_ar":"اشراف","title_en":"Supervision"},{"name_ar":"سلمان الشريف","title_ar":"اعداد","title_en":"Preparation"}]

اللغة

English

المصدر والدورية

اسم المصدر

Enhancing the Photo-oxidative Stability of Non-Fullerene Electron Acceptors

المحتوى والصفحات

عدد الصفحات

0

كلمات الباحثين

Non Fulerane aceeptors , Organic electron acceptors , Organic solar cells

إشراف وإعداد

الإشراف

ايان ماكولوتش

الإعداد

سلمان الشريف

الاقتباسات الببليوغرافية