Effect of bromine doping on the charge transfer, ion migration and stability of the single crystalline MAPb(BrxI1−x)3 photodetector

Apurba Mahapatra; Daniel Prochowicz; Joanna Kruszyńska; Soumitra Satapathi; Seckin Akin; Hemant Kumari; Pawan Kumar; Ziba Fazel; Mohammad Mahdi Tavakoli; Pankaj Yadav

doi:10.1039/D1TC04208D

Effect of bromine doping on the charge transfer, ion migration and stability of the single crystalline MAPb(Br_xI_1−x)₃ photodetector†

Apurba Mahapatra,

^a Daniel Prochowicz,

*^b Joanna Kruszyńska,^b Soumitra Satapathi,

^c Seckin Akin,^d Hemant Kumari,^e Pawan Kumar,^a Ziba Fazel,^f Mohammad Mahdi Tavakoli

*^gh and Pankaj Yadav*^e

Author affiliations

* Corresponding authors

^a Department of Physics & Astronomy, National Institute of Technology, Rourkela, India

^b Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
E-mail: dprochowicz@ichf.edu.pl

^c Department of Physics, Indian Institute of Technology Roorkee, Roorkee, Haridwar, Uttarakhand, India

^d Department of Metallurgical and Materials Engineering, Karamanoglu Mehmetbey University, 70200 Karaman, Turkey

^e Department of Solar Energy, School of Technology, Pandit Deendayal Petroleum University, Gandhinagar 382 007, Gujarat, India
E-mail: pankaj.yadav@sse.pdpu.ac.in

^f Electrical Engineering Department, Sharif University of Technology, Tehran, Iran

^g Department of Materials Science and Engineering, Sharif University of Technology, 14588 Tehran, Iran

^h Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
E-mail: mtavakol@mit.edu

Abstract

Organic–inorganic halide perovskites (OIHPs) have emerged as a promising semiconductor for the fabrication of efficient optoelectronic devices such as photodetectors (PDs). Among all the perovskite compositions, the mixed-halide MAPb(Br_xI_1−x)₃ formulations have gained more attention for photodetection application thanks to their tunable optoelectronic properties and great stability. However, there is still a lack of sufficient understanding of the effect of Br doping on the stability and physical properties of MAPb(Br_xI_1−x)₃ based PDs. In this work, we prepare a series of MAPb(Br_xI_1−x)₃ (x = 0, 0.04, 0.08, 0.12, and 0.16) single crystals (SCs) and investigate the influence of the Br content on the crystal structure, charge transport, ion migration, and recombination phenomena. Moreover, self-powered PDs with a structure of Pt/MAPb(Br_xI_1−x)₃ SC/Pt have been developed, and their optoelectrical properties at different wavelengths of light sources (blue, green, red, and white) have been studied. We found that all the PDs exhibit the highest photoresponse under white light indicating their potential for broad spectrum detection applications. Particularly, the MAPb(Br_0.16I_0.84)₃ SC PD exhibits the highest responsivity of 2.41 mA W⁻¹ at white light intensity, while the highest detectivity of 15.41 × 10¹⁰ Jones was observed for the MAPb(Br_0.12I_0.88)₃ SC PD due to the smaller amount of trap states and suppressed ion migration, as proved by impedance spectroscopy. Finally, the photostability and one-year shelf-life stability of the corresponding PDs are demonstrated.

Journal of Materials Chemistry C

Effect of bromine doping on the charge transfer, ion migration and stability of the single crystalline MAPb(Br_xI_1−x)₃ photodetector†

Abstract

Supplementary files

Article information

Download Citation

Permissions

Effect of bromine doping on the charge transfer, ion migration and stability of the single crystalline MAPb(Br_xI_1−x)₃ photodetector

Social activity

Search articles by author

Spotlight

Advertisements

Journal of Materials Chemistry C