Fig 1. (IMAGE) Science China Press Caption Scanning electron microscopy images (a, b), two-dimensional X-ray diffraction pattern (c), and atomic force microscopy image (d) of aligned CH3NH3PbI3 single crystal microwire arrays, and the statistics of the length and alignment of CH3NH3PbI3 wires grown under different heating conditions. Credit ©Science China Press Usage Restrictions Use with credit. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.