Spray deposited gallium doped zinc oxide (GZO) thin film as the electron transport layer in inverted organic solar cells

Sanjay Kumar Swami, Neha Chaturvedi, Anuj Kumar, Vinod Kumar, Ashish Garg, Viresh Dutta

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


The electric field-assisted spray deposition of highly conducting and transparent gallium doped zinc oxide (GZO) films, with noticeable improvement in optical, structural, and electrical properties, is reported for application in organic photovoltaics with superior device performance. The GZO films deposited with applied voltages of 0 and 2000V to the nozzle exhibited an improved electrical resistivity of ∼1.8 × 10−3 Ω-cm and a transmittance (in the visible region) of over 80% for the films deposited under electric field, which can be used as electron transport layer (ETL) in inverted organic solar cells (IOSCs- ITO/GZO/PTB7:PC71BM/MoO3/Ag). Improved photovoltaic performance (power conversion efficiency: 6.5%) is obtained for the IOSC devices fabricated GZO ETL with the applied voltage of 2000V in comparison to the device fabricated using GZO ETL with the applied voltage = 0V (power conversion efficiency: 5.8%).
Original languageEnglish (US)
Pages (from-to)458-463
Number of pages6
StatePublished - 2022
Externally publishedYes

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