Synthesis, dielectric and thermal performance of PVA nanocomposites with cadmium-based quantum dots

Tuna Demirci; Erdem Elibol; Şeref Karadeniz

Makale detayları

Synthesis, dielectric and thermal performance of PVA nanocomposites with cadmium-based quantum dots

Yazarlar:

Tuna Demirci | Erdem Elibol | Şeref Karadeniz

Yayıncı:

Pamukkale University

Ana Başlıklar:

Elektrik Mühendisliği (Diğer)

Dergi:

Pamukkale Üniversitesi Mühendislik Bilimleri Dergisi Vol.31 Issue 2, pp.319-330

Belge Tipi:

Makale

Yayın Tarihi:

4/2025

Belge Dili:

İngilizce

Document ID (Org No.):

2001345862

pISSN:

2147-5881

Anahtar kelimeler:

Özet:

 Hybrid polymer structures formed with semiconductor quantum dots that are doped into the polymer matrix and whose optical properties can be adjusted have attracted attention with their high usage potential in electronic applications in recent years. In this study, three types of Cd-based QD CdX XSe, Te, SeTe were used to strengthen the poly vinyl alcohol PVA matrix and increase its optical properties. Optical, conductivity and thermal characterizations of PVA3 different Cd-based QDs CdSe QD-PVA nanocomposites structures were evaluated comparatively. With the addition of QDs, it was observed that the PVA  QDs nanocomposites structure exhibits fluorescence properties. Hybridization structures in PVAQDs nanocomposites structures were illuminated by FT-IR spectrum. In addition, it was determined that the thermal stability of hybrid polymer structures increased between 7-9 and the melting point of PVAQDs hybrid polymers increased by 5-7 C which was analyzed by DSC. The highest thermal stability and melting point increases were observed in PVACdSeTe QDs hybrid structures. With the addition of CdSe QDs and CdTe QDs into the PVA matrix, the conductivity value of the hybrid polymer structure increased 100 times, while the addition of CdSeTe QDs increased the conductivity by 1000 times. Similarly, in dielectric constant and dielectric loss tests, it was determined that PVA  CdSeTe QDs hybrid polymer structures are more successful than both types due to the synergic effect.

 Hybrid polymer structures formed with semiconductor quantum dots that are doped into the polymer matrix and whose optical properties can be adjusted have attracted attention with their high usage potential in electronic applications in recent years. In this study, three types of Cd-based QD CdX XSe, Te, SeTe were used to strengthen the poly vinyl alcohol PVA matrix and increase its optical properties. Optical, conductivity and thermal characterizations of PVA3 different Cd-based QDs CdSe QD-PVA nanocomposites structures were evaluated comparatively. With the addition of QDs, it was observed that the PVA  QDs nanocomposites structure exhibits fluorescence properties. Hybridization structures in PVAQDs nanocomposites structures were illuminated by FT-IR spectrum. In addition, it was determined that the thermal stability of hybrid polymer structures increased between 7-9 and the melting point of PVAQDs hybrid polymers increased by 5-7 C which was analyzed by DSC. The highest thermal stability and melting point increases were observed in PVACdSeTe QDs hybrid structures. With the addition of CdSe QDs and CdTe QDs into the PVA matrix, the conductivity value of the hybrid polymer structure increased 100 times, while the addition of CdSeTe QDs increased the conductivity by 1000 times. Similarly, in dielectric constant and dielectric loss tests, it was determined that PVA  CdSeTe QDs hybrid polymer structures are more successful than both types due to the synergic effect.

 Hybrid polymer structures formed with semiconductor quantum dots that are doped into the polymer matrix and whose optical properties can be adjusted have attracted attention with their high usage potential in electronic applications in recent years. In this study, three types of Cd-based QD CdX XSe, Te, SeTe were used to strengthen the poly vinyl alcohol PVA matrix and increase its optical properties. Optical, conductivity and thermal characterizations of PVA3 different Cd-based QDs CdSe QD-PVA nanocomposites structures were evaluated comparatively. With the addition of QDs, it was observed that the PVA  QDs nanocomposites structure exhibits fluorescence properties. Hybridization structures in PVAQDs nanocomposites structures were illuminated by FT-IR spectrum. In addition, it was determined that the thermal stability of hybrid polymer structures increased between 7-9 and the melting point of PVAQDs hybrid polymers increased by 5-7 C which was analyzed by DSC. The highest thermal stability and melting point increases were observed in PVACdSeTe QDs hybrid structures. With the addition of CdSe QDs and CdTe QDs into the PVA matrix, the conductivity value of the hybrid polymer structure increased 100 times, while the addition of CdSeTe QDs increased the conductivity by 1000 times. Similarly, in dielectric constant and dielectric loss tests, it was determined that PVA  CdSeTe QDs hybrid polymer structures are more successful than both types due to the synergic effect.

 Polimer matrisine katkılı yarı iletken kuantum noktaları ile oluşturulan ve optik özellikleri ayarlanabilen hibrit polimer yapıları, son yıllarda elektronik uygulamalarda yüksek kullanım potansiyelleri ile dikkat çekmektedir. Bu çalışmada, polivinilalkol PVA matrisini güçlendirmek ve optik özelliklerini arttırmak için üç tip Cd bazlı kuantum nokta QDs CdX XSe, Te, SeTe kullanılmıştır. PVA3 farklı Cd tabanlı QDs yapılarının optik, iletkenlik ve termal karakterizasyonları karşılaştırmalı olarak değerlendirildi. QDslerin eklenmesiyle birlikte PVAQDs nanokompozit yapısının floresans özellikleri sergilediği yapılarındaki gözlemlendi. hibridizasyon yapıları PVAQDs nanokompozit FT-IR spektrumu ile aydınlatılmıştır. Ayrıca DSC ile analiz edilen hibrit polimer yapıların termal stabilitesinin 7-9 arasında arttığı ve PVAQDs hibrit polimerlerin erime noktasının 5 ile 7 C arttığı tespit edilmiştir. En yüksek termal kararlılık ve erime noktası artışları PVACdSeTe QDs hibrit yapılarında gözlendi. PVA matrisine CdSe QDsler ve CdTe QDslerin eklenmesiyle hibrit polimer yapısının iletkenlik değeri 100 kat artarken, CdSeTe QDslerin eklenmesi iletkenliği 1000 kat artırmıştır. Benzer şekilde dielektrik sabiti ve dielektrik kayıp testlerinde de PVACdSeTe QDs hibrit polimer yapılarının sinerjik etki nedeniyle her iki tipe göre daha başarılı olduğu tespit edilmiştir.

Makale detayları

Synthesis, dielectric and thermal performance of PVA nanocomposites with cadmium-based quantum dots

Yazarlar:

Tuna Demirci | Erdem Elibol | Şeref Karadeniz

Yayıncı:

Pamukkale University

Ana Başlıklar:

Elektrik Mühendisliği (Diğer)

Dergi:

Pamukkale Üniversitesi Mühendislik Bilimleri Dergisi Vol.31 Issue 2, pp.319-330

Belge Tipi:

Makale

Yayın Tarihi:

4/2025

Belge Dili:

İngilizce

Document ID (Org No.):

2001345862

pISSN:

2147-5881

Nanotechnology

PVA nanocomposites

Quantum dots

Optical properties

Thermal properties

Dielectric permittivityNanoteknoloji

PVA nanokompozitleri

Kuantum noktaları

Optik özellikler

Termal özellikler

Dielektrik geçirgenlik

Sayı

Makale detayları

Yazarlar: Tuna Demirci | Erdem Elibol | Şeref Karadeniz

Yayıncı: Pamukkale University

Ana Başlıklar: Elektrik Mühendisliği (Diğer)

Dergi: Pamukkale Üniversitesi Mühendislik Bilimleri Dergisi Vol.31 Issue 2, pp.319-330

Belge Tipi: Makale

Yayın Tarihi: 4/2025

Belge Dili: İngilizce

Document ID (Org No.): 2001345862

pISSN: 2147-5881

Sayı

Yazarlar:

Tuna Demirci | Erdem Elibol | Şeref Karadeniz

Yayıncı:

Pamukkale University

Ana Başlıklar:

Elektrik Mühendisliği (Diğer)

Dergi:

Pamukkale Üniversitesi Mühendislik Bilimleri Dergisi Vol.31 Issue 2, pp.319-330

Belge Tipi:

Makale

Yayın Tarihi:

4/2025

Belge Dili:

İngilizce

Document ID (Org No.):

2001345862

pISSN:

2147-5881