在宽带间隔矿太阳能电池中不均的化物阳离子沿平面外的方向分布及其对开放电路电压损失和相隔离的影响
Linkai Yu1, Chuwu Xing1, Qinghui Bao1
1Key Laboratory for the Green Preparation and Application of Functional Materials, Ministry of Education, Hubei Key Laboratory of Polymer, School of Material Science and Engineering, Hubei University, Wuhan 430062, Hubei Province, China.
ACS applied materials & interfaces
|June 18, 2024
概括
在宽带间隙矿太阳能电池 (PSC) 中添加黑素 (MT) 改善了化物离子的分布,减少了电压损失和相分离. 这一突破提高了PSC的功率转换效率 (PCE) 到22.88%.
科学领域:
- 材料科学 材料科学 材料科学
- 可再生能源可再生能源是可再生能源.
- 太阳能光伏发电是如何实现的
背景情况:
- 宽带间隙矿太阳能电池 (PSC) 面临的挑战是开放电路电压 (VOC) 损失和相隔离.
- 在PSC中VOC损失和相隔离的潜在机制仍未得到充分探索.
研究的目的:
- 调查离子分布在VOC损失和在宽带间隙PSC中的相分离中的作用.
- 探索黑激素 (MT) 作为一种提高离子分布和设备性能的策略.
主要方法:
- 在PSC中沿外平面方向分析离子分布.
- 在矿前体溶液中引入氨酸 (MT).
- 结晶调节和表面修饰技术.
主要成果:
- 在结晶过程中异质离子分布被确定为VOC损失和相隔离的关键原因.
- 黑素 (MT) 的引入导致了均的化离子分布和调节的结晶.
- 经过处理的PSC实现了22.88%的功率转换效率 (PCE),最小的VOC损失为0.38V.
结论:
- 在宽带间隙PSC中,均离子分布对于减轻VOC损失和相分离至关重要.
- 黑素 (MT) 是一种有效的添加剂,可以实现均化物分布,并提高PSC的性能.
- 该研究提出了一种发展高效率宽带间隙PSC的有希望的方法.
相关概念视频
P-N junction
511
A p-n junction is formed when p-type and n-type semiconductor materials are joined together. At the interface of the p-n junction, holes from the p-side and electrons from the n-side begin to diffuse into the opposite sides due to the concentration gradient. This diffusion of carriers leads to a region around the junction where there are no free charge carriers, known as the depletion region. The charge density within the depletion region for the n-side and p-side can be described by the...
511
Energy Bands in Solids
823
Isolated atoms have discrete energy levels that are well described by the Bohr model. And, it quantifies the energy of an electron in a hydrogen atom as En. Higher quantum numbers 'n' yield less negative, closer electron energy levels.
Band Formation:
When atoms are brought close together, as in a solid, these discrete energy levels begin to split due to the overlap of electron orbitals from adjacent atoms. This split occurs because of the Pauli exclusion principle, which states...
Band Formation:
When atoms are brought close together, as in a solid, these discrete energy levels begin to split due to the overlap of electron orbitals from adjacent atoms. This split occurs because of the Pauli exclusion principle, which states...
823
Carrier Generation and Recombination
560
Carrier generation is the process by which electron-hole pairs (EHPs) are created within the semiconductor. In direct-bandgap semiconductors, such as gallium arsenide (GaAs), this occurs efficiently when energy absorption prompts valence electrons to leap into the conduction band, leaving behind holes.
This process is given by the generation rate G and is efficient due to the conservation of momentum between the valence band maximum and conduction band minimum.
Indirect generation involves an...
This process is given by the generation rate G and is efficient due to the conservation of momentum between the valence band maximum and conduction band minimum.
Indirect generation involves an...
560


