Liu Yiming, Sun Yun, Liu Wei, Yao Jianghong
Institute of Photo-electronic Thin Film Devices and Technology, Nankai University, Tianjin 300071, China.
Phys Chem Chem Phys. 2014 Aug 7;16(29):15400-10. doi: 10.1039/c4cp00668b.
With an amorphous silicon (a-Si:H)/crystalline silicon (c-Si) heterojunction structure, the heterojunction with intrinsic thin-layer (HIT) solar cell has become one of the most promising technologies for c-Si based solar cells. By replacing a-Si:H thin films with appropriate compound semiconductors, we propose novel heterojunction structures which allow c-Si heterojunction solar cells to possess higher power conversion efficiencies than HIT solar cells. Several promising heterojunction candidates and hetero-structures have been proposed in this work, and this kind of novel c-Si compound heterojunction solar cell is denominated HCT (heterojunction with a compound thin-layer). The feasibilities of these novel HCT structures are further investigated by theoretical approaches, and the modeling results demonstrate the device performance improvement. Finally, this paper proclaims the compound selection standards and essentials of achieving high-efficiency HCT solar cells, which are guidelines for the real device implementation.
具有非晶硅（a-Si:H）/晶体硅（c-Si）异质结结构的本征薄膜异质结（HIT）太阳能电池已成为基于c-Si的太阳能电池中最具前景的技术之一。通过用合适的化合物半导体替代a-Si:H薄膜，我们提出了新型异质结结构，使c-Si异质结太阳能电池具有比HIT太阳能电池更高的功率转换效率。本文提出了几种有前景的异质结候选结构和异质结构，这种新型c-Si化合物异质结太阳能电池被命名为HCT（具有化合物薄层的异质结）。通过理论方法进一步研究了这些新型HCT结构的可行性，建模结果表明了器件性能的提升。最后，本文公布了实现高效HCT太阳能电池的化合物选择标准和要点，这些是实际器件实现的指导方针。
