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2-Methoxy Ethanol-Driven Solvent Engineering of Cs3Bi2I9 Perovskite Films andits Impact on Lead Free Perovskite Solar Cell Devices


Affiliations
1 Centre for Renewable Energy, Prof. Rajendra Singh (Rajju Bhaiya) Institute of Physical Sciences for Study and Research, V. B. S. Purvanchal University, Jaunpur 222 003, India
2 Department of Physics, Chowdhary Mahadeo Prasad Degree College, University of Allahabad, Allahabad 211 002, India
3 Department of Physics, Prof. Rajendra Singh (Rajju Bhaiya) Institute of Physical Sciences for Study and Research, V. B. S. Purvanchal University, Jaunpur 222 003, India
4 Department of Pure & Applied Physics, Guru Ghasidas Vishwavidyalaya (A Central University), Bilaspur 495 009, India

The development of compact perovskite thin films is essential for fabrication of high-performance solar cell devices. Solvent engineering stands out as a promising method to achieve such films, providing a straightforward approach with significant control over the film formation process. In this study, we employed a solvent engineering approach to attain compact and uniform growth in Cs3Bi2I9 films. We incorporated 2-methoxy ethanol (2-ME) as an additive in N, N-Dimethylformamide (DMF) solvent. The resulting perovskite films exhibited enhanced crystallinity and absorbance compared to films prepared with DMF alone, particularly when using a DMF:2-ME mixing ratio of 4:1. Moreover, we successfully fabricated lead-free, flexible perovskite solar cell devices using a solution processing technique. The photovoltaic performance of estimated and efficiency of devices prepared with 4:1 ratio of DMF:2-ME exhibited efficiency of ~1.56%.

Keywords

Solvent engineering; Semi-transparent Solar cells; Lead-free perovskite solar cells; Flexible solar cells
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  • 2-Methoxy Ethanol-Driven Solvent Engineering of Cs3Bi2I9 Perovskite Films andits Impact on Lead Free Perovskite Solar Cell Devices

Abstract Views: 27  | 

Authors

Anil K Sharma
Centre for Renewable Energy, Prof. Rajendra Singh (Rajju Bhaiya) Institute of Physical Sciences for Study and Research, V. B. S. Purvanchal University, Jaunpur 222 003, India
Ambreesh Kumar
Centre for Renewable Energy, Prof. Rajendra Singh (Rajju Bhaiya) Institute of Physical Sciences for Study and Research, V. B. S. Purvanchal University, Jaunpur 222 003, India
Jitendra Yadav
Centre for Renewable Energy, Prof. Rajendra Singh (Rajju Bhaiya) Institute of Physical Sciences for Study and Research, V. B. S. Purvanchal University, Jaunpur 222 003, India
Upendra Chauhan
Centre for Renewable Energy, Prof. Rajendra Singh (Rajju Bhaiya) Institute of Physical Sciences for Study and Research, V. B. S. Purvanchal University, Jaunpur 222 003, India
Savita
Centre for Renewable Energy, Prof. Rajendra Singh (Rajju Bhaiya) Institute of Physical Sciences for Study and Research, V. B. S. Purvanchal University, Jaunpur 222 003, India
Maikesh Mathur
Department of Physics, Chowdhary Mahadeo Prasad Degree College, University of Allahabad, Allahabad 211 002, India
Hari P Bhasker
Department of Physics, Chowdhary Mahadeo Prasad Degree College, University of Allahabad, Allahabad 211 002, India
Punit K Dhawan
Department of Physics, Prof. Rajendra Singh (Rajju Bhaiya) Institute of Physical Sciences for Study and Research, V. B. S. Purvanchal University, Jaunpur 222 003, India
Shiv P Patel
Department of Pure & Applied Physics, Guru Ghasidas Vishwavidyalaya (A Central University), Bilaspur 495 009, India
Dhirendra K Chaudhary
Centre for Renewable Energy, Prof. Rajendra Singh (Rajju Bhaiya) Institute of Physical Sciences for Study and Research, V. B. S. Purvanchal University, Jaunpur 222 003, India

Abstract


The development of compact perovskite thin films is essential for fabrication of high-performance solar cell devices. Solvent engineering stands out as a promising method to achieve such films, providing a straightforward approach with significant control over the film formation process. In this study, we employed a solvent engineering approach to attain compact and uniform growth in Cs3Bi2I9 films. We incorporated 2-methoxy ethanol (2-ME) as an additive in N, N-Dimethylformamide (DMF) solvent. The resulting perovskite films exhibited enhanced crystallinity and absorbance compared to films prepared with DMF alone, particularly when using a DMF:2-ME mixing ratio of 4:1. Moreover, we successfully fabricated lead-free, flexible perovskite solar cell devices using a solution processing technique. The photovoltaic performance of estimated and efficiency of devices prepared with 4:1 ratio of DMF:2-ME exhibited efficiency of ~1.56%.

Keywords


Solvent engineering; Semi-transparent Solar cells; Lead-free perovskite solar cells; Flexible solar cells