• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Optoelectronics, IET >Enhancing the efficiency of the intermediate band solar cells by introducing: carrier losses, alloying and strain
【24h】

Enhancing the efficiency of the intermediate band solar cells by introducing: carrier losses, alloying and strain

机译：通过引入以下内容来提高中频带太阳能电池的效率：载流子损耗，合金化和应变

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A detailed balance model is used to determine the efficiency of intermediate band solar cell including carrier losses from the intermediate band. The effect of the energy gap of the host semiconductor is examined as a function of the intermediate band position in the energy gap and the host semiconductor energy gap. Generally the optimal intermediate band level decreases within the energy gap to mitigate the carrier losses, and carrier losses are less detrimental to small energy gap materials. We therefore focus on the role of carrier losses in wide bandgap semiconductor intermediate band solar cell systems, such as the GaN semiconductor with an Mn impurity band. Experimentally Mn acceptor level in the GaN energy gap is 1.8 eV above the valence band, which is 199 meV off the ideal intermediate band and reduces the efficiency to 21.36%. We demonstrate how carrier losses can be introduced into the system to shift the optimum IB position. Introducing carrier losses shifts the optimal intermediate band position to 1.8 eV above the valence band and increases the efficiency to 23.41%. We compare this to the effect of alloying GaN and introducing biaxial strain to shift the effective position of the Mn impurity band on the efficiency.
机译：详细的平衡模型用于确定中频太阳能电池的效率，包括来自中频的载波损耗。根据该能隙中的中间带位置和该主体半导体能隙来检查主体半导体的能隙的影响。通常，最佳中间带能级在能隙内降低以减轻载流子损耗，并且载流子损耗对较小的能隙材料不利。因此，我们将重点放在载流子损耗在宽带隙半导体中间带太阳能电池系统（例如具有Mn杂质带的GaN半导体）中的作用。实验上，GaN能隙中的Mn受体能级比价带高1.8 eV，比理想中间带高199 meV，效率降低至21.36％。我们演示了如何将载波损耗引入系统中，以改变最佳IB位置。引入载流子损耗会将最佳中间带位置移至价带之上1.8 eV，并将效率提高至23.41％。我们将此与合金化GaN并引入双轴应变以改变Mn杂质带的有效位置对效率的影响进行比较。

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