Detection of X-ray photons by solution-processed lead halide perovskites

Yakunin S, Sytnyk M, Kriegner D, Shrestha S, Richter M, Matt G, Azimi H, Brabec C, Stangl J, Kovalenko MV, Heiß W (2015)

Publication Status: Published

Publication Type: Journal article, Original article

Publication year: 2015

Journal

Nature Photonics Nature Publishing Group

Book Volume: 9

Pages Range: 444-449

Journal Issue: 7

DOI: 10.1038/nphoton.2015.82

Abstract

The evolution of real-time medical diagnostic tools such as angiography and computer tomography from radiography based on photographic plates was enabled by the development of integrated solid-state X-ray photon detectors made from conventional solid-state semiconductors. Recently, for optoelectronic devices operating in the visible and near-infrared spectral regions, solution-processed organic and inorganic semiconductors have also attracted a great deal of attention. Here, we demonstrate a possibility to use such inexpensive semiconductors for the sensitive detection of X-ray photons by direct photon-to-current conversion. In particular, methylammonium lead iodide perovskite (CH3NH3PbI3) offers a compelling combination of fast photoresponse and a high absorption cross-section for X-rays, owing to the heavy Pb and I atoms. Solution-processed photodiodes as well as photoconductors are presented, exhibiting high values of X-ray sensitivity (up to 25 μC mGyair-1 cm-3) and responsivity (1.9 × 104 carriers/photon), which are commensurate with those obtained by the current solid-state technology.

Authors with CRIS profile

Shreetu Shrestha Institute Materials for Electronics and Energy Technology (i-MEET) (i-MEET) Moses Richter Institute Materials for Electronics and Energy Technology (i-MEET) (i-MEET) Gebhard Matt Institute Materials for Electronics and Energy Technology (i-MEET) (i-MEET) Christoph Brabec Institute Materials for Electronics and Energy Technology (i-MEET) (i-MEET) Wolfgang Heiß Professur für Werkstoffwissenschaften (lösungsprozessierte Halbleitermaterialien)

Additional Organisation(s)

Energie-Campus Nürnberg (EnCN) Graduiertenkolleg 1896/2 In situ Mikroskopie mit Elektronen, Röntgenstrahlen und Rastersonden Interdisziplinäres Zentrum, Center for Nanoanalysis and Electron Microscopy (CENEM)

Involved external institutions

Johannes Kepler Universität (JKU) Linz AT Austria (AT) Eidgenössische Technische Hochschule Zürich (ETHZ) / Swiss Federal Institute of Technology in Zurich CH Switzerland (CH)

How to cite

APA:

Yakunin, S., Sytnyk, M., Kriegner, D., Shrestha, S., Richter, M., Matt, G.,... Heiß, W. (2015). Detection of X-ray photons by solution-processed lead halide perovskites. Nature Photonics, 9(7), 444-449. https://doi.org/10.1038/nphoton.2015.82

MLA:

Yakunin, Sergii, et al. "Detection of X-ray photons by solution-processed lead halide perovskites." Nature Photonics 9.7 (2015): 444-449.

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