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@ARTICLE{Zhang:851229,
      author       = {Zhang, Yi-Xin and Ma, Zheng and Ge, Zhen-Hua and Qin, Peng
                      and Zheng, Fengshan and Feng, Jing},
      title        = {{H}ighly enhanced thermoelectric properties of {C}u 1.8 {S}
                      by introducing {P}b{S}},
      journal      = {Journal of alloys and compounds},
      volume       = {764},
      issn         = {0925-8388},
      address      = {Lausanne},
      publisher    = {Elsevier},
      reportid     = {FZJ-2018-04929},
      pages        = {738 - 744},
      year         = {2018},
      abstract     = {Digenite (Cu1.8S) has attracted extensive attention as
                      candidate for use in thermoelectric applications due to its
                      low-cost, low-toxicity characteristics, but the
                      thermoelectric (TE) property is still not good. In this
                      work, PbS was used for improving TE properties of
                      polycrystalline Cu1.8S bulk. Cu1.8S+ x $wt\%$ PbS
                      (x = 0, 0.5, 1, 2, 3) bulk samples were fabricated via
                      mechanical alloying (MA) and spark plasma sintering (SPS)
                      techniques. The effects of adding PbS on the TE performance
                      of Cu1.8S were investigated in detail at the temperature
                      between 323 K and 773 K. According to the results,
                      introducing PbS is an efficient approach for optimizing the
                      TE properties of Cu1.8S, which is mainly due to the
                      maintained electrical transport properties by the regulated
                      hole carrier concentration and the modified band structure,
                      as well as the reduced the thermal conductivity by the
                      generated point defect and additional interfaces. An optimum
                      thermoelectric figure of merit (ZT) value of 1.1 was
                      obtained at 773 K for the Cu1.8S sample with $2 wt\%$
                      PbS, which is 2.2 times higher than that of the pristine
                      Cu1.8S (0.49 at 773 K).},
      cin          = {PGI-5},
      ddc          = {670},
      cid          = {I:(DE-Juel1)PGI-5-20110106},
      pnm          = {143 - Controlling Configuration-Based Phenomena (POF3-143)},
      pid          = {G:(DE-HGF)POF3-143},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000444058300089},
      doi          = {10.1016/j.jallcom.2018.06.116},
      url          = {https://juser.fz-juelich.de/record/851229},
}