Investigation of the Optical, Structural and electrical properties of In2S3 thin films prepared by spray pyrolysis by changing indium salts under different temperatures

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HASHEMI MARYAM; Ghorashi Seyed Mohammad Bagher; Heydariramshe Maryam; Taghavinia Nima; MAHDAVI SEYED MOHAMMAD

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Journal: NANOSCALE Year:2020 | Volume:7 | Issue:2 Page(s): 26-35

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Title

Investigation of the Optical, Structural and electrical properties of In2S3 thin films prepared by spray pyrolysis by changing indium salts under different temperatures

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Keywords

In2S3Q1

Electron transport layer (ETL)Q1

spray pyrolysisQ1

solar cellQ1

Abstract

The Electron transport layer (ETL) plays an essential role in the solar cell Performance. In recent years, In2S3 has been used as ETL in photovoltaics such as CZT(S, Se), CIG (S, Se) and Perovskite thin film solar cells. In this study, the easy and inexpensive spray pyrolysis method was used to fabricate In2S3 layers. The effect of indium salt type on the electrical, optical, structural and morphological characteristics of the as-sprayed In2S3 layers was investigated. Regarding this target, the Characterization techniques including X-ray diffraction (XRD), Field emission electron microscopy (FESEM) equipped with elemental analysis (EDS), UV-Vis spectrophotometer, Mott Schottky electrochemical analysis and four-point probe resistance analysis were used. The indium source (chloride, nitrate and acetate salts) has strong influence on the crystallinity and morphological properties. The layers resulted from precursor including indium acetate salt, are highly porous compared to the other two precursors. Whereas, the best crystallinity and lowest electrical surface resistivity by using the chloride salt were obtained. In addition, the surface resistance decreases dramatically with increasing substrate temperature. Although the prepared In2S3 layers all have n-type conductivity and indirect band gap of ~2 eV, the energy levels of the band structure varies by changing the Indium salt. The density of the majority carriers (electrons) also varies from 2. 1 × 10 17-3 cm to 2. 9 × 19-3 10 cm. The highest carrier density is related to the sprayed layers at 420 ° C consuming Indium acetate salt.

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APA: Copy

HASHEMI, MARYAM, Heydariramshe, Maryam, Ghorashi, Seyed Mohammad Bagher, Taghavinia, Nima, & MAHDAVI, SEYED MOHAMMAD. (2020). Investigation of the Optical, Structural and electrical properties of In2S3 thin films prepared by spray pyrolysis by changing indium salts under different temperatures. NANOSCALE, 7(2 ), 26-35. SID. https://sid.ir/paper/256971/en

Vancouver: Copy

HASHEMI MARYAM, Heydariramshe Maryam, Ghorashi Seyed Mohammad Bagher, Taghavinia Nima, MAHDAVI SEYED MOHAMMAD. Investigation of the Optical, Structural and electrical properties of In2S3 thin films prepared by spray pyrolysis by changing indium salts under different temperatures. NANOSCALE[Internet]. 2020;7(2 ):26-35. Available from: https://sid.ir/paper/256971/en

IEEE: Copy

MARYAM HASHEMI, Maryam Heydariramshe, Seyed Mohammad Bagher Ghorashi, Nima Taghavinia, and SEYED MOHAMMAD MAHDAVI, “Investigation of the Optical, Structural and electrical properties of In2S3 thin films prepared by spray pyrolysis by changing indium salts under different temperatures,” NANOSCALE, vol. 7, no. 2 , pp. 26–35, 2020, [Online]. Available: https://sid.ir/paper/256971/en

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