Nanokompozit güneş hücresi tasarimi, yapimi ve karakterizasyonu
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Dosyalar
Tarih
2019
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Ege Üniversitesi, Fen Bilimleri Enstitüsü
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Bu tez çalışmasında, farklı boyutlarda PbS kuantum noktaları sentezlenerek, belli analizler yapıldı. Sentezlenen bu PbS kuantum noktaları büyüklükleri, FTIR, UV-Vis-NIR, PL spektrumları gösterildi. PbS kuantum noktasının gösterdiği normalden farklı floresans spektrumunun nedeni açıklanmaya çalışıldı. Sentezlenen kuantum noktalarından yaklaşık boyutu 4.7 nm olan kuantum noktasıyla güneş hücresi yapıldı. Güneş hücresi yapmadan önce PBS14 diye adlandırdığımız kuantum noktası için TEM ile büyüklüklerinin stabil olduğu gösterildi. Ayrıca stabil büyüklüklerde olduğunu desteklemek için XRD SAXS, DSL ile boyut analizleri yapıldı. Güneş hücresi yapmak için PbS kuantum noktasının yüzeyini kaplayan oleik asit adlı molekül, farklı kükürt içeren molekülerle kuantum noktası yüzeyinden kaldırılarak, nanokompozitler yapıldı. Yüzey değişimi için kullanılan molekülerin hesapsal çalışmaları Gaussian 09 programı ile yapıldı. PBS14 adlı kuantum noktası ile yapılan güneş hücresinin I-V, IPCE ve IMVS ölçümleri alındı. Buna göre PbS14+EDT, PbS14+B13D, PbS14+B14D ve PbS14+B44D ile yapılan güneş hücrelerindeki verimleri arasındaki ilişki açıklanmaya çalışıldı.
In this thesis, PbS quantum dot of different sizes were synthesized and analyses were performed. For these synthesized PbS quantum dots, size, FTIR, UV-Vis-NIR, PL spectra were shown. The reason for the strange fluoresence spectrum of PbS quantum dot was tried to be explained. From the synthesized quantum dots, a solar cell was made with a quantum dot of size approximately 4.7 nm. Before the solar cell was made, it was shown that their size was stable with using TEM for the PBS14. In addition XRD SAXS, DLS analysis were performed to support PbS14 was stable in size. The molecule called oleic acid, which covers the surface of the PbS quantum dot was removed from the quantum dot surface using different types of sulfur-containing molecules. The computational studies of the different type sulfur-containing molecules used for the surface exchange were performed with Gaussian 09 program. I-V, IPCE and IMVS measurements of the solar cells made with PbS14 quantum dot were done. Accordingly, the relationship between PbS14+EDT, PbS14+B13D, PbS14+B14D and PbS14+B44D efficiencies in solar cells were tried to be explained.
In this thesis, PbS quantum dot of different sizes were synthesized and analyses were performed. For these synthesized PbS quantum dots, size, FTIR, UV-Vis-NIR, PL spectra were shown. The reason for the strange fluoresence spectrum of PbS quantum dot was tried to be explained. From the synthesized quantum dots, a solar cell was made with a quantum dot of size approximately 4.7 nm. Before the solar cell was made, it was shown that their size was stable with using TEM for the PBS14. In addition XRD SAXS, DLS analysis were performed to support PbS14 was stable in size. The molecule called oleic acid, which covers the surface of the PbS quantum dot was removed from the quantum dot surface using different types of sulfur-containing molecules. The computational studies of the different type sulfur-containing molecules used for the surface exchange were performed with Gaussian 09 program. I-V, IPCE and IMVS measurements of the solar cells made with PbS14 quantum dot were done. Accordingly, the relationship between PbS14+EDT, PbS14+B13D, PbS14+B14D and PbS14+B44D efficiencies in solar cells were tried to be explained.
Açıklama
Anahtar Kelimeler
Kuantum Noktası, Yoğunluk Ayarlı Foto-Gerilim Spektroskopisi, 1,2-Ethanedithiol, 1,3-Benzenedithiol, Benzene-1, 4-Dithiol, Gaussian 09, Qunatum Dot, Intensity Modulated Photovoltage Spectroscopy
