Investigation on Photovoltaic Performance based on Matchstick-Like Cu2S–In2S3Heterostructure Nanocrystals and Polymer

In this paper, we synthesized a novel type II cuprous sulfide (Cu2S)–indium sulfide (In2S3) heterostructure nanocrystals with matchstick-like morphology in pure dodecanethiol. The photovoltaic properties of the heterostructure nanocrystals were investigated based on the blends of the nanocrystals and poly(2-methoxy-5-(2′-ethylhexoxy)-p-phenylenevinylene) (MEH-PPV). In comparison with the photovoltaic properties of the blends of Cu2S or In2S3nanocrystals alone and MEH-PPV, the power conversion efficiency of the hybrid device based on blend of Cu2S–In2S3and MEH-PPV is enhanced by ~3–5 times. This improvement is consistent with the improved exciton dissociation or separation and better charge transport abilities in type II heterostructure nanocrystals

Synthesis of Cu3SnS4 nanocrystals and nanosheets by using Cu31S16 as seeds

Orthorhombic Cu3SnS4 nano-cuboids and nanosheets were synthesized by using monoclinic Cu31S16 nanocrystals as seeds. Transmission electron microscopy and powder X-ray diffractometry were adopted to investigate the resultant nanocrystals and the structural transformation of monoclinic Cu31S16 to orthorhombic Cu3SnS4.No Full Tex

Synthesis of Cu3SnS4 nanocrystals and nanosheets by using Cu31S16 as seeds

Orthorhombic Cu3SnS4 nano-cuboids and nanosheets were synthesized by using monoclinic Cu31S16 nanocrystals as seeds. Transmission electron microscopy and powder X-ray diffractometry were adopted to investigate the resultant nanocrystals and the structural transformation of monoclinic Cu31S16 to orthorhombic Cu3SnS4

Smart Logistics, Industrial Structure Upgrading, and the Sustainable Development of Foreign Trade: Evidence from Chinese Cities

As a key component of new infrastructure, smart logistics is becoming an essential driver for reducing foreign trade costs and risks and promoting the sustainable development of foreign trade. Using panel data from 286 prefecture level and above cities from 2014 to 2023, this article attempts to refine the measurement of smart logistics level from provincial to municipal levels, construct a two-way fixed effect model and a mediation effect model, and deeply explore the inherent relationship between smart logistics, industrial structure upgrading, and sustainable development of foreign trade. The results reveal that: (1) smart logistics significantly promotes the sustainable development of foreign trade. (2) Rationalization and advancement of industrial structure play an intermediary role between the two. (3) Market integration has a positive moderating effect on the path of “smart logistics—industrial structure rationalization”, but the moderating effect is not significant in other paths. It has been confirmed that there is a “siphon effect” in the advantageous regions. (4) Heterogeneity analysis shows that the effect of smart logistics on foreign trade promotion is more significant in the central and inland regions. This study provides a theoretical basis and practical inspiration for optimizing regional smart logistics layout and deepening industrial structure adjustment