A facile and novel method has been developed to prepare ultrathin PbI2 single crystals with good mechanical flexibility and bendability for high sensitivity photodetectors. The prototype lateral metal–semiconductor–metal photodetector based on the as-prepared crystal exhibits a responsivity of up to 11.3 A W−1, a photogain of 31.84, and a high-speed photoresponse with a time constant of 354 μs.
J. Zhang, T. Song, Z. Zhang, K. Ding, F. Huang and B. Sun, J. Mater. Chem. C, 2015, 3, 4402 DOI: 10.1039/C4TC02712D
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