Understanding of carrier dynamics, heterojunction merits and device physics: towards designing efficient carrier transport layer-free perovskite solar cells

2020 ◽  
Vol 49 (2) ◽  
pp. 354-381 ◽  
Author(s):  
Jin-Feng Liao ◽  
Wu-Qiang Wu ◽  
Yong Jiang ◽  
Jun-Xing Zhong ◽  
Lianzhou Wang ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Performance ◽  
Carrier Transport ◽  
Perovskite Solar Cells ◽  
Carrier Dynamics ◽  
Transport Layer ◽  
Device Physics ◽  
Recent Advances

This review summarizes recent advances in the carrier transport layer-free perovskite solar cells and elucidates the fundamental carrier dynamics, heterojunction merits and device physics towards mysterious high performance.

scholarly journals Efficient wide-bandgap perovskite solar cells enabled by doping a bromine-rich molecule

Nanophotonics ◽  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Rui He ◽  
Tingting Chen ◽  
Zhipeng Xuan ◽  
Tianzhen Guo ◽  
Jincheng Luo ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Performance ◽  
Open Circuit Voltage ◽  
Perovskite Solar Cells ◽  
Wide Bandgap ◽  
Open Circuit ◽  
Transport Layer ◽  
Electron Transport Layer ◽  
Tandem Solar Cells ◽  
Carrier Lifetimes

Abstract Wide-bandgap (wide-E g , ∼1.7 eV or higher) perovskite solar cells (PSCs) have attracted extensive attention due to the great potential of fabricating high-performance perovskite-based tandem solar cells via combining with low-bandgap absorbers, which is considered promising to exceed the Shockley–Queisser efficiency limit. However, inverted wide-E g PSCs with a minimized open-circuit voltage (V oc) loss, which are more suitable to prepare all-perovskite tandem devices, are still lacking study. Here, we report a strategy of adding 1,3,5-tris (bromomethyl) benzene (TBB) into wide-E g perovskite absorber to passivate the perovskite film, leading to an enhanced average V oc. Incorporation of TBB prolongs carrier lifetimes in wide-E g perovskite due to reduction of defects in perovskites and makes a better energy level matching between perovskite absorber and electron transport layer. As a result, we achieve the power conversion efficiency of 17.12% for our inverted TBB-doped PSC with an enhanced V oc of 1.19 V, compared with that (16.14%) for the control one (1.14 V).

MoS2 incorporated hybrid hole transport layer for high performance and stable perovskite solar cells

2018 ◽  
Vol 246 ◽  
pp. 195-203 ◽  
Author(s):  
Dian Wang ◽  
Naveen Kumar Elumalai ◽  
Md Arafat Mahmud ◽  
Haimang Yi ◽  
Mushfika Baishakhi Upama ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Performance ◽  
Perovskite Solar Cells ◽  
Hole Transport ◽  
Transport Layer ◽  
Hole Transport Layer

Charge Carrier Dynamics in Electron-Transport-Layer-Free Perovskite Solar Cells

2019 ◽  
Vol 1 (11) ◽  
pp. 2334-2341
Author(s):  
Yanyan Wang ◽  
Ziyang Hu ◽  
Can Gao ◽  
Cheng Yang ◽  
Houcheng Zhang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Electron Transport ◽  
Charge Carrier ◽  
Perovskite Solar Cells ◽  
Carrier Dynamics ◽  
Transport Layer ◽  
Electron Transport Layer ◽  
Charge Carrier Dynamics

scholarly journals Enhancing the efficiency of planar heterojunction perovskite solar cells via interfacial engineering with 3-aminopropyl trimethoxy silane hydrolysate

2017 ◽  
Vol 4 (12) ◽  
pp. 170980 ◽  
Author(s):  
Ya-Qiong Wang ◽  
Shou-Bin Xu ◽  
Jian-Guo Deng ◽  
Li-Zhen Gao
Keyword(s):  
Solar Cells ◽  
High Performance ◽  
Fill Factor ◽  
Perovskite Solar Cells ◽  
Transport Layer ◽  
Electron Transport Layer ◽  
Interfacial Engineering ◽  
Interfacial Compatibility ◽  
Planar Heterojunction ◽  
Trimethoxy Silane

The interfacial compatibility between compact TiO 2 and perovskite layers is critical for the performance of planar heterojunction perovskite solar cells (PSCs). A compact TiO 2 film employed as an electron-transport layer (ETL) was modified using 3-aminopropyl trimethoxy silane (APMS) hydrolysate. The power conversion efficiency (PCE) of PSCs composed of an APMS-hydrolysate-modified TiO 2 layer increased from 13.45 to 15.79%, which was associated with a significant enhancement in the fill factor (FF) from 62.23 to 68.04%. The results indicate that APMS hydrolysate can enhance the wettability of γ-butyrolactone (GBL) on the TiO 2 surface, form a perfect CH 3 NH 3 PbI 3 film, and increase the recombination resistance at the interface. This work demonstrates a simple but efficient method to improve the TiO 2 /perovskite interface that can be greatly beneficial for developing high-performance PSCs.

Sign in / Sign up

Export Citation Format

Share Document