Inorganic and Layered Perovskites for Optoelectronic Devices

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FAKHARUDDIN, Azhar, Umair SHABBIR, Weiming QIU, Tahir IQBAL, Muhammad SULTAN, Paul HEREMANS, Lukas SCHMIDT-MENDE, 2019. Inorganic and Layered Perovskites for Optoelectronic Devices. In: Advanced Materials. ISSN 0935-9648. eISSN 1521-4095. Available under: doi: 10.1002/adma.201807095

@article{Fakharuddin2019-04-23Inorg-45994, title={Inorganic and Layered Perovskites for Optoelectronic Devices}, year={2019}, doi={10.1002/adma.201807095}, issn={0935-9648}, journal={Advanced Materials}, author={Fakharuddin, Azhar and Shabbir, Umair and Qiu, Weiming and Iqbal, Tahir and Sultan, Muhammad and Heremans, Paul and Schmidt-Mende, Lukas} }

Organic-inorganic halide perovskites are making breakthroughs in a range of optoelectronic devices. Reports of >23% certified power conversion efficiency in photovoltaic devices, external quantum efficiency >21% in light-emitting diodes (LEDs), continuous-wave lasing and ultralow lasing thresholds in optically pumped lasers, and detectivity in photodetectors on a par with commercial GaAs rivals are being witnessed, making them the fastest ever emerging material technology. Still, questions on their toxicity and long-term stability raise concerns toward their market entry. The intrinsic instability in these materials arises due to the organic cation, typically the volatile methylamine (MA), which contributes to hysteresis in the current-voltage characteristics and ion migration. Alternative inorganic substitutes to MA, such as cesium, and large organic cations that lead to a layered structure, enhance structural as well as device operational stability. These perovskites also provide a high exciton binding energy that is a prerequisite to enhance radiative emission yield in LEDs. The incorporation of inorganic and layered perovskites, in the form of polycrystalline films or as single-crystalline nanostructure morphologies, is now leading to the demonstration of stable devices with excellent performance parameters. Herein, key developments made in various optoelectronic devices using these perovskites are summarized and an outlook toward stable yet efficient devices is presented. Fakharuddin, Azhar Heremans, Paul 2019-06-12T12:20:37Z Schmidt-Mende, Lukas Heremans, Paul Iqbal, Tahir 2019-04-23 2019-06-12T12:20:37Z Sultan, Muhammad Shabbir, Umair Inorganic and Layered Perovskites for Optoelectronic Devices Shabbir, Umair Qiu, Weiming Qiu, Weiming Iqbal, Tahir Sultan, Muhammad Fakharuddin, Azhar Schmidt-Mende, Lukas eng

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