Influence of Urbach Energy, Temperature, and Longitudinal Position in the Active Layer on Carrier Diffusion Length in Perovskite Solar Cells

ChemPhysChem ◽  
2019 ◽  
Vol 20 (20) ◽  
pp. 2712-2717 ◽  
Author(s):  
Hooman Mehdizadeh‐Rad ◽  
Jai Singh
Keyword(s):  
Solar Cells ◽  
Active Layer ◽  
Urbach Energy ◽  
Diffusion Length ◽  
Perovskite Solar Cells ◽  
Carrier Diffusion ◽  
Longitudinal Position

Organic Spacer Engineering in 2D/3D Hybrid Perovskites for Efficient and Stable Solar Cells

2022 ◽  
Author(s):  
Xiaofang Ye ◽  
Hongkun Cai ◽  
Qinghe Sun ◽  
Tie Xu ◽  
Jian Ni ◽  
...  
Keyword(s):  
Solar Cells ◽  
Environmental Factors ◽  
Band Gap ◽  
Diffusion Length ◽  
Perovskite Solar Cells ◽  
Carrier Diffusion ◽  
Water Oxygen

Perovskite solar cells (PSCs) have attracted widespread attention as their adjustable band gap, easy manufacture, and longer carrier diffusion length. However, the influence of environmental factors such as water, oxygen,...

scholarly journals Extracting in Situ Charge Carrier Diffusion Parameters in Perovskite Solar Cells with Light Modulated Techniques

2021 ◽  
pp. 2248-2255
Author(s):  
Agustín Bou ◽  
Haralds A̅boliņš ◽  
Arjun Ashoka ◽  
Héctor Cruanyes ◽  
Antonio Guerrero ◽  
...  
Keyword(s):  
Solar Cells ◽  
Charge Carrier ◽  
Perovskite Solar Cells ◽  
Carrier Diffusion ◽  
Diffusion Parameters ◽  
Charge Carrier Diffusion

Vertically Optimized Phase Separation with Improved Exciton Diffusion Enables High-Efficiency Organic Solar Cells with Thick Active Layers

2021 ◽  
Author(s):  
Yanming Sun ◽  
Yunhao Cai ◽  
Qian Li ◽  
Guanyu Lu ◽  
Hwa Sook Ryu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Phase Separation ◽  
Active Layer ◽  
Organic Solar Cells ◽  
High Efficiency ◽  
Diffusion Length ◽  
Active Layer Thickness ◽  
Exciton Diffusion ◽  
Exciton Diffusion Length ◽  
Active Layers

Abstract The development of high-performance organic solar cells (OSCs) with thick active layers is of crucial importance for the roll-to-roll printing of large-area solar panels. Unfortunately, increasing the active layer thickness usually results in a significant reduction in efficiency. Herein, we fabricated efficient thick-film OSCs with an active layer consisting of one polymer donor and two non-fullerene acceptors. The two acceptors were found to possess enlarged exciton diffusion length in the mixed phase, which is beneficial to exciton generation and dissociation. Additionally, layer by layer approach was employed to optimize the vertical phase separation. Benefiting from the synergetic effects of enlarged exciton diffusion length and graded vertical phase separation, a record high efficiency of 17.31% (certified value of 16.9%) was obtained for the 300 nm-thick OSC, with an unprecedented short-circuit current density of 28.36 mA cm−2, and a high fill factor of 73.0%. Moreover, the device with an active layer thickness of 500 nm also shows a record efficiency of 15.21%. This work provides new insights into the fabrication of high-efficiency OSCs with thick active layers.

Sign in / Sign up

Export Citation Format

Share Document