Trilaminar ZnO/ZnS/Sb2S3 nanotube arrays for efficient inorganic-organic hybrid solar cells

Jianhua Han, Zhifeng Liu*, Xuerong Zheng, Keying Guo, Xueqi Zhang, Tiantian Hong, Bo Wang, Junqi Liu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

40 Scopus citations


Efficient hybrid solid-state solar cells based on novel trilaminar ZnO/ZnS/Sb2S3 nanotube arrays (NTs) and poly(3-hexylthiophene) (P3HT) are fabricated by using a buffer layer using ZnS and surface modification using a sensitizer layer (Sb2S3). Vertically aligned trilaminar ZnO/ZnS/Sb2S3 nanotube arrays (NTs) were directly grown on an indium-doped tin oxide (ITO) substrate via a low-cost hydrothermal chemical conversion method based on ion exchange, which is easy to be manipulated and can form uniform structures without destroying the original morphology. The ZnO/ZnS/Sb2S3/P3HT hybrid solar cell exhibited an improved short-circuit current density (J sc) of 5.57 mA cm-2, open-circuit voltage (Voc) of 440 mV, giving rise to a power conversion efficiency of 1.32%. The trilaminar architecture is able to suppress carrier recombination and increase electron collection efficiency via (i) increasing photon absorption through a sensitizer layer (Sb2S3), (ii) forming a buffer layer (ZnS) on the surface of ZnO NTs in the chemical conversion process and (iii) a better energy level alignment in the ZnO/ZnS/Sb2S3/P3HT.

Original languageEnglish
Pages (from-to)23807-23814
Number of pages8
JournalRSC Advances
Issue number45
StatePublished - 2014
Externally publishedYes


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