دورية أكاديمية
Exploring the Potential of Nucleic Acid Bases in Organic Light Emitting Diodes
| العنوان: | Exploring the Potential of Nucleic Acid Bases in Organic Light Emitting Diodes |
|---|---|
| المؤلفون: | Gomez, Eliot F, Venkatraman, Vishak, Grote, James G, Steckl, Andrew J |
| المساهمون: | AIR FORCE RESEARCH LAB WRIGHT-PATTERSON AFB OH |
| المصدر: | DTIC |
| سنة النشر: | 2014 |
| المجموعة: | Defense Technical Information Center: DTIC Technical Reports database |
| مصطلحات موضوعية: | Biochemistry, Organic Chemistry, Electrooptical and Optoelectronic Devices, LIGHT EMITTING DIODES, NUCLEIC ACIDS, ADENINE, CHARGE TRANSFER, CYTOSINE, DIELECTRIC PROPERTIES, ELECTRONS, EVAPORATION, FABRICATION, GUANINE, LAYERS, LOW TEMPERATURE, OPTICAL PROPERTIES, THERMOGRAVIMETRIC ANALYSIS, THIN FILMS, URACILS, NB(NUCLEOBASES), OLED(ORGANIC LIGHT EMITTING DIODES), THYMINE, EBL(ELECTRON-BLOCKING LAYERS), HBL(HOLE-BLOCKING LAYERS), ELECTRON AFFINITY, MOLECULAR ORBITAL ENERGY LEVELS |
| الوصف: | Naturally occurring biomolecules have increasingly found applications in organic electronics as a low cost, performance-enhancing, environmentally safe alternative. Previous devices, which incorporated DNA in organic light emitting diodes (OLEDs), resulted in significant improvements in performance. In this work, nucleobases (NBs), constituents of DNA and RNA polymers, are investigated for integration into OLEDs. NB small molecules form excellent thin films by low-temperature evaporation, enabling seamless integration into vacuum deposited OLED fabrication. Thin film properties of adenine (A), guanine (G), cytosine (C), thymine (T), and uracil (U) are investigated. Next, their incorporation as electron-blocking (EBL) and hole-blocking layers (HBL) in phosphorescent OLEDs is explored. NBs affect OLED performance through charge transport control, following their electron affinity trend: G A C T U . G and A have lower electron affinity (1.8 2.2 eV), blocking electrons but allowing hole transport. C , T , and U have higher electron affinities (2.6 3.0 eV), transporting electrons and blocking hole transport. A-EBL-based OLEDs achieve current and external quantum efficiencies of 52 cd A 1 and 14.3%, a ca. 50% performance increase over the baseline device with conventional EBL. The combination of enhanced performance, wide diversity of material properties, simplicity of use, and reduced cost indicate the promise of nucleobases for future OLED development. ; Prepared in collaboration with the Nanoelectronics Laboratory, University of Cincinnati, Cincinnati, OH, and the Qualitative Reasoning Group, Northwestern University, Evanston, IL. |
| نوع الوثيقة: | text |
| وصف الملف: | text/html |
| اللغة: | English |
| العلاقة: | http://www.dtic.mil/docs/citations/ADA618352Test |
| الإتاحة: | http://www.dtic.mil/docs/citations/ADA618352Test http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA618352Test |
| حقوق: | Approved for public release; distribution is unlimited. |
| رقم الانضمام: | edsbas.571F7A21 |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |