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Effects of Hydroiodic Acid Concentration on the Properties of CsPbI3 Perovskite Solar Cells.

ABSTRACT: Inorganic cesium lead triiodide (CsPbI3) perovskite materials are becoming increasingly attractive for use in perovskite/silicon tandem solar cells, due to their almost ideal band gap energy (E g) of about 1.7 eV. To be useful as photovoltaic absorbers, the CsPbI3 must form the cubic or black phase (?-CsPbI3). To do so at relatively low temperatures, hydroiodic acid (HI) is required as a solution additive. This paper demonstrates CsPbI3 perovskite solar cells with an efficiency of 6.44%, formed using a HI concentration of 36 ?L/mL. This value is higher than the previous most commonly used HI additive concentration. Herein, by undertaking a systematic study of the HI concentration, we demonstrate that the structural, morphological, optical, and electrical properties of CsPbI3 solar cells, processed with this HI additive concentration, are superior.

SUBMITTER: Haque F

PROVIDER: S-EPMC6644767 | biostudies-literature | 2018 Sep

REPOSITORIES: biostudies-literature

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Effects of Hydroiodic Acid Concentration on the Properties of CsPbI3 Perovskite Solar Cells.

Haque Faiazul F Wright Matthew M Mahmud Md Arafat MA Yi Haimang H Wang Dian D Duan Leiping L Xu Cheng C Upama Mushfika Baishakhi MB Uddin Ashraf A

ACS omega 20180926 9

Inorganic cesium lead triiodide (CsPbI3) perovskite materials are becoming increasingly attractive for use in perovskite/silicon tandem solar cells, due to their almost ideal band gap energy (E g) of about 1.7 eV. To be useful as photovoltaic absorbers, the CsPbI3 must form the cubic or black phase (α-CsPbI3). To do so at relatively low temperatures, hydroiodic acid (HI) is required as a solution additive. This paper demonstrates CsPbI3</su ...[more]

PMID: 31459278

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