Wafer Scale Growth Of Large Arrays Of Perovskite Micro-Plate Crystals For Functional Electronics And Optoelectronics

Allows scalable growth of large arrays of perovskite crystals with controlled physical dimension at specific locations of the pre-patterned electrodes

Electronic and optoelectronic materials for:  Photovoltaic materials  Solar cells  Lasers  Light emitting diodes  Photo-detectors  Radiation detectors

Researchers at UCLA have developed a novel method for scalable growth of large arrays of methylammonium lead iodide perovskite micro-plates with controlled physical dimension and spatial location on diverse substrates. These directly-grown micro-plate arrays have demonstrated the best reported field effect mobility to date, when they are used to create independently-addressable photo-detector arrays and well-performing field effect transistors. The direct growth of perovskite crystals at specific locations of the pre-patterned electrodes offers an alternative strategy towards highly integrated electronic and optoelectronic systems.

State Of Development

Growth of the patterned perovskite crystal arrays has been demonstrated at wafer scale and on different substrates such as glass, silicon wafer and gold electrode. Its applications in photo-detector and transistors have demonstrated best reported field effect mobility to date.

Background

Methylammonium lead halides (CH3NH3PbX3, where X = I, Br or Cl) are solid compounds with perovskite structure. Methylammonium lead halide perovskite has attracted extensive interest for diverse optoelectronic applications in solar cells, lasers, light emitting diodes, photo-detectors, and radiation detectors. The ability to use lithography to pattern electronic materials has been essential for the integrated electronic/optoelectronic systems. However, soluble in various solvents, the perovskite materials are not compatible with typical lithographic process and thus most of its studies have been limited to bulk polycrystalline thin films that are difficult to implement for integrated device arrays.

Related Materials

Wang, G., Li, D., Cheng, H., Li, Y., Chen, C., Yin, A., Zhao, Z., Lin, Z., Wu, H., He, Q., Ding, M., Liu, Y., Huang, Y., Duan, X. Wafer scale growth of large arrays of perovskite micro-plate crystals for functional electronics and optoelectronics. Science Advances. 2015.

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Tech ID/UC Case

29257/2016-304-0

Related Cases

2016-304-0

USA