首页> 外文期刊>RSC Advances >Ag8SnS6: a new IR solar absorber material with a near optimal bandgap
【24h】

Ag8SnS6: a new IR solar absorber material with a near optimal bandgap

机译:Ag8SnS6:一种新型红外吸收器材料,具有接近最佳的带隙

获取原文
           

摘要

We report the synthesis and photovoltaic properties of a new ternary solar absorber – Ag _(8) SnS _(6) nanocrystals prepared by successive ionic layer adsorption reaction (SILAR) technique. The synthesized Ag _(8) SnS _(6) nanocrystals have a bandgap E _(g) of 1.24–1.41 eV as revealed from UV-Vis and external quantum efficiency (EQE) measurements. Its photovoltaic properties were characterized by assembling a liquid-junction Ag _(8) SnS _(6) sensitized solar cell for the first time. The best cell yielded a J _(sc) of 9.29 mA cm ~(?2) , a V _(oc) of 0.23 V, an FF of 31.3% and a power conversion efficiency (PCE) of 0.64% under 100% incident light illumination using polysulfide electrolyte and Au counter electrode. The efficiency improved to 1.43% at a reduced light intensity of 10% sun. When the polysulfide was replaced by a cobalt electrolyte with a lower redox level, the V _(oc) increased to 0.54 V and PCE increased to 2.29% under 0.1 sun, a respectable efficiency for a new solar material. The EQE spectrum covers the spectral range of 300–1000 nm with a maximum EQE of 77% at λ = 600 nm. The near optimal E _(g) and the respectable photovoltaic performance suggest that Ag _(8) SnS _(6) nanocrystals have potential to be an efficient IR solar absorber.
机译:我们报告了通过连续离子层吸附反应(SILAR)技术制备的新型三元太阳能吸收剂– Ag _(8)SnS _(6)纳米晶体的合成和光电性能。合成的Ag _(8)SnS _(6)纳米晶体的能隙E _(g)为1.24–1.41 eV,这是从UV-Vis和外部量子效率(EQE)测量得出的。通过首次组装液接Ag_(8)SnS_(6)敏化太阳能电池来表征其光伏性能。最佳电池在100%入射下产生的J _(sc)为9.29 mA cm〜(?2),V _(oc)为0.23 V,FF为31.3%和功率转换效率(PCE)为0.64%使用聚硫化物电解质和Au对电极进行光照。在减少10%的太阳光强度时,效率提高到1.43%。当用具有较低氧化还原水平的钴电解质代替多硫化物时,在0.1阳光下V_(oc)增加到0.54 V,PCE增加到2.29%,这对于新型太阳能材料而言是相当可观的效率。 EQE光谱覆盖300-1000 nm的光谱范围,在λ= 600 nm时最大EQE为77%。接近最佳的E _(g)和可观的光伏性能表明,Ag _(8)SnS _(6)纳米晶体具有成为高效IR太阳能吸收剂的潜力。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号