MEH-PPV/Alq_3-based bulk heterojunction photodetector

作     者：Zubair Ahmad Mahdi Hasan Suhail Issam Ibrahim Muhammad Wissam Khayer Al-Rawi Khaulah Sulaiman Qayyum Zafar Ahmad Sazali Hamzah Zurina Shaameri 

作者机构：Low Dimensional Materials Research CenterDepartment of PhysicsFaculty of ScienceUniversity of Malaya50603 Kuala LumpurMalaysia Department of PhysicsCollege of ScienceUniversity of BaghdadIraq Department of PhysicsCollege of ScienceUniversity of AnbarIraq Organic Synthesis LaboratoryInstitute of ScienceUniversiti Teknologi MARA40450 Shah AlamMalaysia 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2013年第22卷第10期

页      面：192-196页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0704[理学-天文学] 0803[工学-光学工程] 0702[理学-物理学] 

基　　金：Project supported by the Long Term Research Grant Scheme(LRGS) Ministry of Higher Education Malaysia(Grant No.LR003/2011A) 

主　　题：MEH-PPV Alq3 bulk heterojunction photodiode 

摘      要：In this paper, we present the effect of varied illumination levels on the electrical properties of the organic blend bulk heterojuction （BHJ） photodiode. To prepare the BHJ blend, poly（2-methoxy-5（2P-ethylhexyloxy） phenyleneviny- lene （MEH-PPV） and aluminum-tris-（8-hydroxyquinoline） （Alq3） are used as donor and acceptor materials, respectively. In order to fabricate the photodiode, a 40-nm thick film of poly（3, 4-ethylendioxytbiophene）：poly（styrensulfonate） （PE- DOT：PSS） is primarily deposited on a cleaned ITO coated glass substrate by spin coating technique. The organic photo- sensitive blend is later spun coated on the PEDOT：PSS layer, followed by the lithium fluoride （LiF） and aluminium （A1） thin films deposition by thermal evaporation. The optical properties of the MEH-PPV：Alq3 blend thin films are investigated using photoluminescence （PL） and UV-Vis spectroscopy. The photodiode shows good photo-current response as a function of variable illumination levels. The responsivity value - 8 mA/W at 3 V is found and the ratio of photo-current to dark current （lph/IDark） is found to be 1.24.