PMID- 26988275 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20161013 LR - 20181113 IS - 2045-2322 (Electronic) IS - 2045-2322 (Linking) VI - 6 DP - 2016 Mar 18 TI - In situ synthesis of Bi2S3 sensitized WO3 nanoplate arrays with less interfacial defects and enhanced photoelectrochemical performance. PG - 23451 LID - 10.1038/srep23451 [doi] LID - 23451 AB - In this study, Bi2S3 sensitive layer has been grown on the surface of WO3 nanoplate arrays via an in situ approach. The characterization of samples were carried out using scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD) and ultraviolet-visible absorption spectroscopy (UV-vis). The results show that the Bi2S3 layer is uniformly formed on the surface of WO3 nanoplates and less interfacial defects were observed in the interface between the Bi2S3 and WO3. More importantly, the Bi2S3/WO3 films as photoanodes for photoelectrochemical (PEC) cells display the enhanced PEC performance compared with the Bi2S3/WO3 films prepared by a sequential ionic layer adsorption reaction (SILAR) method. In order to understand the reason for the enhanced PEC properties, the electron transport properties of the photoelectrodes were studied by using the transient photocurrent spectroscopy and intensity modulated photocurrent spectroscopy (IMPS). The Bi2S3/WO3 films prepared via an in situ approach have a greater transient time constant and higher electron transit rate. This is most likely due to less interfacial defects for the Bi2S3/WO3 films prepared via an in situ approach, resulting in a lower resistance and faster carrier transport in the interface between WO3 and Bi2S3. FAU - Liu, Canjun AU - Liu C AD - School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China. FAU - Yang, Yahui AU - Yang Y AD - College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China. FAU - Li, Wenzhang AU - Li W AD - School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China. FAU - Li, Jie AU - Li J AD - School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China. FAU - Li, Yaomin AU - Li Y AD - Department of Chemistry, University College London, 20 Gordon Street, London, WC1H 0AJ, UK. FAU - Chen, Qiyuan AU - Chen Q AD - School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20160318 PL - England TA - Sci Rep JT - Scientific reports JID - 101563288 SB - IM PMC - PMC4796909 EDAT- 2016/03/19 06:00 MHDA- 2016/03/19 06:01 PMCR- 2016/03/18 CRDT- 2016/03/19 06:00 PHST- 2015/10/28 00:00 [received] PHST- 2016/03/07 00:00 [accepted] PHST- 2016/03/19 06:00 [entrez] PHST- 2016/03/19 06:00 [pubmed] PHST- 2016/03/19 06:01 [medline] PHST- 2016/03/18 00:00 [pmc-release] AID - srep23451 [pii] AID - 10.1038/srep23451 [doi] PST - epublish SO - Sci Rep. 2016 Mar 18;6:23451. doi: 10.1038/srep23451.