Spectroscopic investigation of defect-state emission in CdSe quantum dots

Ünlü, Caner; Guleroglu, Gulhan

doi:10.3906/kim-2101-66

Spectroscopic investigation of defect-state emission in CdSe quantum dots

Gülhan GÜLEROĞLU, (İstanbul Teknik Üniversitesi, Fen Edebiyat Fakültesi, Kimya Bölümü, İstanbul, Türkiye)

Caner ÜNLÜ (İstanbul Teknik Üniversitesi, Lisansüstü Eğitim Enstitüsü, Nanobilim ve Nanomühendislik Bölümü, İstanbul, Türkiye)

Turkish Journal of Chemistry

5 0

Yıl: 2021 Cilt: 45 Sayı: 3 Sayfa Aralığı: 520 - 527 Metin Dili: İngilizce DOI: 10.3906/kim-2101-66 İndeks Tarihi: 28-06-2022

Spectroscopic investigation of defect-state emission in CdSe quantum dots

Öz:

CdSe quantum dots are the most studied Cd-based quantum dots with their high quantum yield, high photostability, narrow emission band, and easy synthesis procedure. They are frequently used to develop light emitting diode (LED) due to their unique photophysical properties; however, their narrow emission band causes a challenge to design white LEDs because white light emission requires emission in multiple wavelengths with broad emission bands. Here in this study, we developed CdSe quantum dots with a narrow bandedge emission band and broad defect-state emission band through a modified two-phase synthesis method. Our results revealed that defect-state emission is directly linked to the surface of quantum dots and can be excited through exciting surfactant around the quantum dot. The effect of surfactant on emission properties of CdSe quantum dots diminished upon growing a shell around CdSe quantum dots; as a result, surface-dependent defect-state emission cannot be observed in gradient heterogeneous alloyed $CdS_x Se_{1-x}$ quantum dots.

Anahtar Kelime:

Belge Türü: Makale Makale Türü: Araştırma Makalesi Erişim Türü: Erişime Açık

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APA	Guleroglu G, Ünlü C (2021). Spectroscopic investigation of defect-state emission in CdSe quantum dots. , 520 - 527. 10.3906/kim-2101-66
Chicago	Guleroglu Gulhan,Ünlü Caner Spectroscopic investigation of defect-state emission in CdSe quantum dots. (2021): 520 - 527. 10.3906/kim-2101-66
MLA	Guleroglu Gulhan,Ünlü Caner Spectroscopic investigation of defect-state emission in CdSe quantum dots. , 2021, ss.520 - 527. 10.3906/kim-2101-66
AMA	Guleroglu G,Ünlü C Spectroscopic investigation of defect-state emission in CdSe quantum dots. . 2021; 520 - 527. 10.3906/kim-2101-66
Vancouver	Guleroglu G,Ünlü C Spectroscopic investigation of defect-state emission in CdSe quantum dots. . 2021; 520 - 527. 10.3906/kim-2101-66
IEEE	Guleroglu G,Ünlü C "Spectroscopic investigation of defect-state emission in CdSe quantum dots." , ss.520 - 527, 2021. 10.3906/kim-2101-66
ISNAD	Guleroglu, Gulhan - Ünlü, Caner. "Spectroscopic investigation of defect-state emission in CdSe quantum dots". (2021), 520-527. https://doi.org/10.3906/kim-2101-66

APA	Guleroglu G, Ünlü C (2021). Spectroscopic investigation of defect-state emission in CdSe quantum dots. Turkish Journal of Chemistry, 45(3), 520 - 527. 10.3906/kim-2101-66
Chicago	Guleroglu Gulhan,Ünlü Caner Spectroscopic investigation of defect-state emission in CdSe quantum dots. Turkish Journal of Chemistry 45, no.3 (2021): 520 - 527. 10.3906/kim-2101-66
MLA	Guleroglu Gulhan,Ünlü Caner Spectroscopic investigation of defect-state emission in CdSe quantum dots. Turkish Journal of Chemistry, vol.45, no.3, 2021, ss.520 - 527. 10.3906/kim-2101-66
AMA	Guleroglu G,Ünlü C Spectroscopic investigation of defect-state emission in CdSe quantum dots. Turkish Journal of Chemistry. 2021; 45(3): 520 - 527. 10.3906/kim-2101-66
Vancouver	Guleroglu G,Ünlü C Spectroscopic investigation of defect-state emission in CdSe quantum dots. Turkish Journal of Chemistry. 2021; 45(3): 520 - 527. 10.3906/kim-2101-66
IEEE	Guleroglu G,Ünlü C "Spectroscopic investigation of defect-state emission in CdSe quantum dots." Turkish Journal of Chemistry, 45, ss.520 - 527, 2021. 10.3906/kim-2101-66
ISNAD	Guleroglu, Gulhan - Ünlü, Caner. "Spectroscopic investigation of defect-state emission in CdSe quantum dots". Turkish Journal of Chemistry 45/3 (2021), 520-527. https://doi.org/10.3906/kim-2101-66