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Study on spray-pyrolyzed In2S3 thin films, targeted as electron transport layer in solar energy

Hashemi, M ; Sharif University of Technology | 2020

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  1. Type of Document: Article
  2. DOI: 10.1117/1.JPE.10.024001
  3. Publisher: SPIE , 2020
  4. Abstract:
  5. Efficient electron transport layers (ETLs) play a pivotal role in the performance of solar cells. In recent years, Indium sulfide (In2S3) has been studied as a promising ETL in CuInGaS(e)2, Cu2ZnSnS(e)4, and perovskite solar cells. Despite several studies on spray-deposited In2S3, there is no complete experimental investigation on In2S3 thin films. The effect of the molar ratio of S/In and the type of indium precursor on the structural, morphological, optical, and electrical properties of sprayed-In2S3 layers has been studied. Films were characterized using x-ray diffraction, scanning electron microscopy (SEM), optical transmission (UV-Vis), Mott-Schottky analysis, four-point probe, and cyclic voltammetry measurements. The crystallinity and morphological characteristics are strongly influenced by the type of indium salt, where indium acetate precursor results in a highly porous film compared with nitrate and chloride precursors. The chloride precursor demonstrates better crystallinity and considerably lower sheet resistance. All films are n-type with a carrier concentration in the range of â1/42 × 1017 to â1/42 × 1018 cm - 3, with an indirect bandgap of 2.0 eV. © 2020 Society of Photo-Optical Instrumentation Engineers (SPIE)
  6. Keywords:
  7. Chemical spray pyrolysis ; Solar cells ; Carrier concentration ; Chlorine compounds ; Crystallinity ; Cyclic voltammetry ; Electron transport properties ; Indium sulfide ; Light transmission ; Molar ratio ; Organometallics ; Perovskite ; Perovskite solar cells ; Scanning electron microscopy ; Solar energy ; Sulfur compounds ; Chloride precursor ; Electron transport layers ; Experimental investigations ; Four point probe ; Morphological characteristic ; Mott-Schottky analysis ; Spray-deposited ; Voltammetry measurements ; Thin films
  8. Source: Journal of Photonics for Energy ; Volume 10, Issue 2 , 2020
  9. URL: https://www.spiedigitallibrary.org/journals/journal-of-photonics-for-energy/volume-10/issue-2/024001/Study-on-spray-pyrolyzed-In2S3-thin-films-targeted-as-electron/10.1117/1.JPE.10.024001.short?SSO=1