Fabrication and characterization of organic/inorganic photovoltaic device
Başlık çevirisi mevcut değil.
- Tez No: 402314
- Danışmanlar: PROF. MİHRİMAH ÖZKAN
- Tez Türü: Doktora
- Konular: Elektrik ve Elektronik Mühendisliği, Electrical and Electronics Engineering
- Anahtar Kelimeler: Belirtilmemiş.
- Yıl: 2012
- Dil: İngilizce
- Üniversite: Unıversıty Of Calıfornıa Rıversıde
- Enstitü: Yurtdışı Enstitü
- Ana Bilim Dalı: Elektrik Mühendisliği Ana Bilim Dalı
- Bilim Dalı: Belirtilmemiş.
- Sayfa Sayısı: Belirtilmemiş.
Özet
Özet yok.
Özet (Çeviri)
Energy is central to achieving the goals of sustainable development and will continue to be a primary engine for economic development. In fact, access to and consumption of energy is highly effective on the quality of life. The consumption of all energy sources have been increasing and the projections show that this will continue in the future. Unfortunately, conventional energy sources are limited and they are about to run out. Solar energy is one of the major alternative energy sources to meet the increasing demand. Photovoltaic devices are one way to harvest energy from sun and as a branch of photovoltaic devices organic bulk heterojunction photovoltaic devices have recently drawn tremendous attention because of their technological advantages for actualization of large-area and cost effective fabrication. The research in this dissertation focuses on both the mathematical modelling for better and more efficient characterization and the improvement of device power conversion efficiency. In the first part, we studied the effect of incident light power on the space charge regions of the Schottky barriers of the organic bulk heterojunction photovoltaic devices, the current-voltage (I-V) characteristics and performance of the devices and built an I-V model for the devices that involves these effects. The incident light power showed an effect on the Schottky barriers of the devices by changing the width of the space charge regions. This change directly affects the reverse bias I-V curves by increasing the current values and the slope of the curves. But under excessive incident light power; the space charge regions merge, the devices break down and work as ohmic devices. In the second part, we combined the two improvement methods, improving the charge carrier transport and improving absorption of the organic bulk heterojunction photovoltaic devices. For charge carrier transport improvement, we presented DNA complexes as hole collecting and electron blocking layer on the anode side of the devices by using them as band energy diagram arranging layer, for absorption improvement with plasmonic effect of the particles, we present colloidal platinum nanoparticles as the surface plasmons. DNA-CTMA layer improved the device performance by improving the charge carrier hopping efficiency of the devices by arranging the band energy diagram in order to collect holes easily and block electrons diffusing to anode electrodes. PtNC layer improved the device performance by increasing the light-harvesting efficiency of the devices by increasing the rate of photon absorption. This proves that the PtNCs can be used as surface plasmons in organic BHJ photovoltaic devices. Because peak their extinction spectra matches with the peak of absorbance of P3HT:PCBM. Combination of these two novel materials in the same device showed a significant improvement as a 26% increase in the PCE of the devices The research conducted in this dissertation offers promising potential of organic bulk heterojunction photovoltaic devices as one of the clean and affordable alternative energy sources for supplying increasing demand on energy.
Benzer Tezler
- Synthesis and characterization of semiconductor nanowires via electrochemical technique
Yarı iletken nanoçubukların elektrokimyasal teknikle sentezlenmesi ve karakterizasyonu
BAHADIR DOĞAN
Yüksek Lisans
İngilizce
2009
KimyaOrta Doğu Teknik ÜniversitesiKimya Bölümü
PROF. DR. ZUHAL KÜÇÜKYAVUZ
YRD. DOÇ. DR. NURDAN D. SANKIR
- Saf ve rutenyum (Ru) katkılı transparan iletken oksit yapılı ince filmlerin üretimi, elektriksel, optiksel, yapısal karakterizasyonu ve nem sensörü uygulamaları
Fabrication and characterization of the electrical, optical and structural properties of the pure and ruthenium doped transparent conducting oxides thin films and humidity sensors applications
HANDE SÖZBİLEN
Yüksek Lisans
Türkçe
2012
Elektrik ve Elektronik MühendisliğiEge ÜniversitesiElektrik-Elektronik Mühendisliği Ana Bilim Dalı
YRD. DOÇ. DR. ÖMER MERMER
- Synthesis and optoelectronic applications of benzotriazole and dibenzosilole based alternating copolymers
Benzotriazol ve dibenzosilol tabanlı alternatif kopolimerlerin sentezi ve optoelektronik uygulamaları
OZAN ERLİK
- Fabrication and electrical characterization of sonochemically grown nanostructured ZnO dye sensitized solar cells
Sonokimyasal metodla büyütülmüş ZnO nano yapılı boya duyarlı güneş pillerinin fabrikasyonu ve elektriksel karakterizasyonu
TELAT GÜLER
Yüksek Lisans
İngilizce
2015
Bilim ve TeknolojiGediz ÜniversitesiNanoteknoloji Ana Bilim Dalı
YRD. DOÇ. DR. YAVUZ BAYAM
- Farklı nano yapılar kullanılarak üretilen organik güneş hücrelerinin fotofiziksel karakterizasyonu ve fotovoltaik performans analizleri
Photophysical characterization and photovoltaic performance analysis of organic solar cells produced by using different nanostructures
DENİZ KIYMAZ