Metal-Semiconductor-Metal Lateral Device Structures Based on Hybrid Perovskite
K. S. Narayan a, N. Ganesh a, A. Z. Ashar a
a Jawaharlal Nehru Centre For Advanced Scientific Research, JNCASR, Jakkur, Bengaluru-560064, India, Bengaluru, India
Proceedings of Online Conference on Perovskites for Energy Harvesting: From Fundamentals to Devices (PERENHAR)
Online, Spain, 2020 November 19th - 20th
Organizers: Dinesh Kabra, Sandheep Ravishankar, Angshuman Nag and Priya Mahadevan
Invited Speaker, K. S. Narayan, presentation 026
Publication date: 2nd November 2020

Lateral two-terminal MSM (metal-semiconductor-metal) devices provide a model structure to probe and understand the interface and bulk semiconductor processes. These devices come under a category that is explored widely for back-contact solar cells and light-emitting transistors. We systematically probe pristine hybrid perovskite in lateral M1SM2 configuration where M1 and M2 are two different electrode-metals. Specifically, results for methylammonium lead iodide with Au and Al electrodes will be discussed. I(V) measurements, kelvin-probe microscopy, and spatially varying photocurrent were performed for different combinations of M1 and M2 and different inter-electrode distances spanning from (10 mm to 100 mm). A model to explain these observations and results are proposed. Future directions and implications of these studies will be highlighted.

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