CuxZn1-xS İnce Filmlerin Hazırlanması ve Fiziksel Karakterizasyonu: Güneş Pillerinde Tampon Tabaka Olarak Kullanılabilirliklerinin Araştırılması

Yıl 2020, , 783 - 793, 30.11.2020

Özge Erken

https://doi.org/10.35414/akufemubid.699924

Cited By: 1

Öz

Bu çalışmada, CuxZn1-xS ince filmler kimyasal depolama yöntemi kullanılarak ticari cam alt tabanlar üzerine elde edilmiştir. Cu-katkılama oranının CuxZn1-xS ince filmlerin yapısal, morfolojik, elektriksel ve optiksel özellikler üzerindeki etkisi ayrıntılı olarak incelenmiştir. Bu özelliklere bağlı olarak filmlerin güneş pillerinde tampon tabaka olarak kullanılabilirlikleri araştırılmıştır. XRD ölçümleri filmlerin amorf bir yapıya sahip olduğunu göstermiştir. Taramalı elektron mikroskobu (SEM) görüntülerinden katkılama miktarının arttırılması ile daha sıkı bir yapının oluştuğu gözlenmiştir. Film kalınlıkları gravimetrik analiz ile 250-422 nm aralığında hesaplanmıştır. Filmlerin optik özellikleri UV/vis spektrofotometresi ile 300-1100 nm dalga boyu aralığında oda sıcaklığında elde edilen optik geçirgenlik (%T) değerleri kullanılarak belirlenmiştir. CuxZn1-xS ince filmlerinin görünür bölgedeki optik geçirgenlik değerleri %44-92 olarak bulunmuştur. Yapılan hesaplamalar kırılma indisi (n) değerlerinin görünür bölgede 1.36-2.67 arasında olduğunu göstermiştir. Optik bant aralığı değerleri (Eg) 3.19-3.91 eV aralığında bulunmuştur. Hall ölçümleri CuxZn1-xS ince filmlerin p-tipi iletken olduğunu göstermiştir.

Anahtar Kelimeler

Kimyasal Depolama, CuxZn1-xS İnce Filmler, Güneş Pilleri, Tampon Tabaka

Preparation and Physical Characterization of CuxZn1-xS Thin Films: Investigation of Their Usability as Buffer Layer in Solar Cells

Öz

In this study, CuxZn1-xS thin films were obtained by using chemical bath deposition method on commercial glass substrates. The effect of Cu-doping ratio on the structural, morphological, electrical and optical of CuxZn1-xS thin films were examined in detail. Also of the films were investigated usability as a buffer layer in solar cells depending on these features. XRD measurements showed that the films have an amorphous structure. It was observed that a tighter structure is formed by increasing the doping amount from the scanning electron microscope (SEM) images. The film thicknesses were calculated 250-422 nm by using gravimetric analysis. The optical properties of the films were designated by optical transmittance (T%) measurements obtained wavelength range 300-1100 nm with UV/vis spectrophotometer at room temperature. The optical transmittance values of CuxZn1-xS thin films were found 44-92% in the visible region. The calculations indicated that the refractive index (n) values 1.36-2.67 in the visible region. The optical band gap (Eg) values of the films were determined calculated in the range of 3.19-3.91 eV. Hall measurements showed that CuxZn1-xS thin films are p-type conductivity.

Anahtar Kelimeler

Chemical Deposition, CuxZn1-xS Thin Films, Solar Cells, Buffer Layer

Kaynakça

• Barman, B., Kasturi, V.B., Shivakumar, G.K., 2019. Preparation of thermally deposited Cux(ZnS)1-x thin films for opto-electronic devices. Journal of Alloys and Compounds, 772, 532–536.
• Chalana, S.R., Jolly Bose, R., Reshmi Krishnan, R., Kavitha, V.S., Sreeja Sreedharan, R., Mahadevan Pilla, V.P., 2016. Structural phase modification in Cu incorporated nanostructured zinc sulfide thin films. Journal of Physics and Chemistry of Solids, 95, 24–36.
• Derbali, A., Attaf, A., Saidi, H., Benamra, H., Nouadji, M., Aida, M.S., Attaf, N., Ezzaouia, H., 2018. Investigation of structural, optical and electrical properties of ZnS thin films prepared by ultrasonic spray technique for photovoltaic applications. Optik, 154, 286–293.
• Erken, O., Gunes, M., Ozaslan, D., Gumus, C., 2017. Effect of deposition time on optical and electrical properties of semiconductor ZnS thin films prepared by chemical bath deposition. Indian Journal of Pure & Applied Physics, 55, 471–477.
• Farid, H., Rafea, M.A., El-Wahidy, E.F., El-Shazly, O., 2014. Preparation and characterization of ZnS nanocrystalline thin films by low cost dip technique. Journal of Materials Science: Materials in Electronics, 25, 2017–2023.
• Ghezali, K., Mentar, L., Boudine, B., Azizi, A., 2017. Electrochemical deposition of ZnS thin films and their structural, morphological and optical properties. Journal of Electroanalytical Chemistry, 794, 212–220.
• Goktas A., Aslan F., Tumbul A., 2015. Nanostructured Cu-doped ZnS polycrystalline thin films produced by a wet chemical route: the influences of Cu doping and film thickness on the structural, optical and electrical properties. Journal of Sol-Gel Science and Technology, 75, 45–53.
• Hurma, T., 2018. Structural and optical properties of nanocrystalline ZnS and ZnS:Al films, Journal of Molecular Structure, 1161, 279–284.
• Jrad, A., Naffouti, W., Ben Nasr, T., Turki-Kamoun, N., 2016. Comprehensive optical studies on Ga-doped ZnS thin films synthesized by chemical bath deposition. Journal of Luminescence, 173, 135–140.
• Jubimol, J., Sreejith, M.S., Sudha Kartha, C., Vijayakumar, K.P., Louis, G., 2018. Analysis of spray pyrolysed copper zinc sulfide thin films using photoluminescence. Journal of Luminescence, 203, 436–440.
• Karthik K, Pushpa S, Madhukara Naik M, Vinuth M., 2019. Influence of Sn and Mn on structural, optical and magnetic properties of spray pyrolysed CdS thin films. Materials Research Innovations, 24, 82–86.
• Li, Y., Liu, Z., Duo, S., Zhong, R., Liu, T., 2017. Structural, optical, photocurrent and mechanism-induced photocatalytic properties of surface-modified ZnS thin films by chemical bath deposition. Journal of Materials Science: Materials in Electronics, 28, 28–42.
• Liao, J., Cheng, S., Zhou, H., Long, B., 2013. Al-doped ZnS thin films for buffer layers of solar cells prepared by chemical bath deposition. Micro & Nano Letters, 8, 211–214.
• Liu, K., Li, J., Xu Y., Li, H., Gao, W., 2018. Investigation of ZnS films prepared with different solvents and zinc sources under different experimental conditions. Results in Physics, 11, 749–754.
• Manjulavalli, T.E., Kannan, A.G., 2015. Structural and optical properties of ZnS thin films prepared by chemical bath deposition method. International Journal of ChemTech Research, 8, 396–402.
• Mohagheghpour, E., Rabiee, M., Moztarzadeh, F., Tahriri, M., Jafarbeglou, M., Bizari, D., Eslami, H., 2009. Controllable synthesis, characterization and optical properties of ZnS:Mn nanoparticles as a novel biosensor. Materials Science and Engineering C, 29, 1842–1848.
• Mohamed, S.H., 2010. Photocatalytic, optical and electrical properties of copper-doped zinc sulfide thin films. Journal of Physics D: Applied Physics, 43, 035406.
• Nikzad, M., Khanlary, M.R., Rafee, S., 2019. Structural, optical and morphological properties of Cu doped ZnS thin flms synthesized by sol–gel method. Applied Physics A, 125, 507.
• Offor, P.O., Okorie, B.A., Lokhande, C.D., Patil, P.S., Ezema, F.I., Omah, A.D., Aigbodion, V.S., Ezekoye, B.A., Ezema, I.C., 2018. The properties of spray-deposited zinc sulfide thin films using trisodium citrate complexant. International Journal of Advanced Manufacturing Technology, 95, 1849–1857.
• Ortíz-Ramos, D.E., González, L.A., Ramirez-Bon, R., 2014. p-type transparent Cu-doped ZnS thin films by the chemical bath deposition method. Materials Letters, 124, 267–270.
• Priya, K., Ashith, V.K., Rao, G.K., Sanjeev, G., 2017. A comparative study of structural, optical and electrical properties of ZnS thin films obtained by thermal evaporation and SILAR techniques. Ceramics International, 43, 10487–10493.
• Ramli, H., Rahim, S.K.A., Rahim, T.A.B.D., Aminuddin, M.M., 2013. Optimization of zinc sulfide (ZnS) electron affinity in copper indium sulfide (CIS) based photovoltaic cell. Chalcogenide Letters, 10, 189–195.
• Sabitha, C., Deva Arun Kumar, K., Valanarasu, S., Saranya, A., Hubert Joe, I., 2018. Cu:ZnS and Al:ZnS thin films prepared on FTO substrate by nebulized spray pyrolysis technique. Journal of Materials Science: Materials in Electronics, 29, 4612–4623.
• Sarma, M.P., Kalita, J.M., Wary, G., 2017. Chemically deposited ZnS thin film as potential X-ray radiation sensor. Materials Science in Semiconductor Processing, 61, 131–136.
• Sathishkumar, M., Saroja, M., Venkatachalam, M., 2019. Influence of (Cu, Al) doping concentration on the structural, optical and antimicrobial activity of ZnS thin films prepared by Sol-Gel dip coating techniques. Optik, 182, 774–785.
• Sinha, T., Lilhare, D., Khare, A., 2018. Effects of Various Parameters on Structural and Optical Properties of CBD-Grown ZnS Thin Films: A Review. Journal of Electronic Materials, 47, 1730–1751.
• Talebian E., Talebian M., 2013. A general review on the derivation of Clausius–Mossotti relation. Optik, 124, 2324–2326.
• Tec-Yam, S., Rojas, J., Rejón, V., Oliva, A.I., 2012. High quality antireflective ZnS thin films prepared by chemical bath deposition. Materials Chemistry and Physics, 136, 386–393.
• Zhou, L., Tang, N., Wu S., Hu, X., Xue, Y., 2011. Influence of Deposition Time on ZnS Thin Films Performance with Chemical Bath Deposition. Physics Procedia, 22, 354–359.