NIOS · High Efficiency Nanostructured Electrodes for Organic Solar Cells Using Solution Processed LiF
7РП — „Хора“ (Действия „Мария Кюри“)
- Период
- 2011-03-01 → 2014-02-28
- Финансиране от ЕС
- 45 000 €
- Участници
- 1
- Схема
- MC-ERG
Линиите свързват координатора с партньорите.
Накратко на български
Органичните слънчеви клетки се подобряват чрез добавяне на тънък слой от наночастици литийфлуорид (LiF). Това позволява по-прецизен контрол върху повърхността на електродите, което води до по-висока ефективност при превръщането на светлината в електричество.
Кратко обяснение, генерирано от езиков модел по текста на CORDIS. Оригиналът е по-долу.
Резултати накратко
High Efficiency Nanostructured Electrodes for Organic Solar Cells Using Solution Processed LiF
Conventional electrode structures for organic electronics often rely on interlayers to enhance the efficiency at inorganic electrodes. In this project, we implemented improved electrodes in organic solar cells by introducing a solution processed LiF interlayer. Compared to state-of-the-art production devices, the new interlayer improves the short circuit current and combined with PEDOT:PSS, leads to higher power conversion efficiencies for P3HT:PCBM devices. By producing nanoparticles with a reverse micelle technique, the solution processing route allows controlled assembly of the LiF dispersion on the surface, resulting in alternative electrodes with a high degree of control over the nanoscale structure. The impact of the nanoparticle dispersions can be described by a lateral depolarisation model, where the dispersion of dipolar islands initially increases the global work function of the surface, but as the island density increases to full coverage, the depolarisation from neighbouring islands leads to a net decrease in the global work function. This allows tuning of the surface work function through the control of the nanoparticle dispersion, necessary for improved performance in devices.
Текст от CORDIS, на английски · Данни: CORDIS, © Европейски съюз
Цел на проекта
Conventional electrode structures for organic electronics often rely on interlayers to enhance the efficiency at inorganic electrodes. In this project, we propose to implement improved electrodes in organic solar cells by introducing solution processed LiF interlayers. The performance of devices would be compared with state- of-the-art production devices. A potential increase of performance of 1-2 % with substantial decrease in production costs may be possible. As effective charge balance is a critical component of device operation, optimization of one interface can be changed by modifications at the counter-electrode, so we propose to modify both interfaces in a controlled and systematic way.Recent work on surface modification of indium tin oxide suggests that solution processed LiF can be used to tune the surface work function. LiF has been known to improve device efficiency, although the exact mechanism is still intensely debated. To realize the most effective electrode structure for solar cells, structured layers of solution-processed LiF nanoparticles would be investigated and compared with conventional structures. At the optimal thicknesses for device performance, thermal evaporated LiF forms nanoparticles on organic surfaces. Solution processing would allow controlled assembly of the LiF dispersion on the organic surface, thereby enabling studies of the nanostructured electrode/organic interface on performance. Systematically changing the surface with arrays of nanoparticles would also facilitate a relation between the effects of roughness and electronic properties and device performance.The overall objective of this research plan is to produce alternative electrodes, with a high degree of control over the nanoscale structure, for organic solar cells. Tailoring interfacial structure with improved charge extraction and prevention of detrimental interfacial quenching is a break through milestone on the road to commercialization of organic solar cell devices.
Оригинален текст от CORDIS (на английски).
Участници
- SABANCI UNIVERSITESI · IstanbulКоординаторТурция
Връзки
Данни: CORDIS, © Европейски съюз