Formamidinium tin-based perovskite with low Eg for photovoltaic applications

Teck Ming Koh; Thirumal Krishnamoorthy; Natalia Yantara; Chen Shi; Wei Lin Leong; Pablo P. Boix; Andrew C. Grimsdale; Subodh G. Mhaisalkar; Nripan Mathews

doi:10.1039/C5TA00190K

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Formamidinium tin-based perovskite with low E_g for photovoltaic applications†

Teck Ming Koh,^ab Thirumal Krishnamoorthy,^b Natalia Yantara,^ab Chen Shi,^c Wei Lin Leong,^d Pablo P. Boix,^b Andrew C. Grimsdale,^a Subodh G. Mhaisalkar*^ab and Nripan Mathews*^ab

Author affiliations

* Corresponding authors

^a School of Materials Science and Engineering, Nanyang Technological University, Singapore, Singapore
E-mail: Subodh@ntu.edu.sg, Nripan@ntu.edu.sg

^b Energy Research Institute @NTU (ERI@N), Singapore, Singapore

^c School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, Singapore

^d Institute of Materials Research and Engineering (IMRE), Agency of Science, Technology and Research (A*STAR), Singapore, Singapore

Abstract

A lead-free low bandgap organic–inorganic hybrid perovskite, formamidinium tin iodide, is utilized as a light absorbing layer in photovoltaics. This material has a bandgap of 1.41 eV which allows light harvesting from the near infrared region, making high photocurrents achievable. A power conversion efficiency of 2.10% was accomplished upon incorporating SnF₂.

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Article information

DOI: https://doi.org/10.1039/C5TA00190K
Article type: Communication
Submitted: 09 Jan 2015
Accepted: 15 Jun 2015
First published: 03 Jul 2015

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J. Mater. Chem. A, 2015,3, 14996-15000

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Formamidinium tin-based perovskite with low E_g for photovoltaic applications

T. M. Koh, T. Krishnamoorthy, N. Yantara, C. Shi, W. L. Leong, P. P. Boix, A. C. Grimsdale, S. G. Mhaisalkar and N. Mathews, J. Mater. Chem. A, 2015, 3, 14996 DOI: 10.1039/C5TA00190K

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Journal of Materials Chemistry A