Defect Passivation of CsPbIBr2 Perovskites for High-Performance Solar Cells with Large Open-Circuit Voltage of 1.28 V

2018 ◽  
Vol 1 (11) ◽  
pp. 5872-5878 ◽  
Author(s):  
Jiajun Lu ◽  
Shan-Ci Chen ◽  
Qingdong Zheng
Keyword(s):  
Solar Cells ◽  
High Performance ◽  
Open Circuit Voltage ◽  
Open Circuit ◽  
Defect Passivation

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).

scholarly journals ZnS/SiO2 Passivation Layer for High-Performance of TiO2/CuInS2 Quantum Dot Sensitized Solar Cells

Energies ◽  
2018 ◽  
Vol 11 (8) ◽  
pp. 1931
Author(s):  
Hee-Je Kim ◽  
Jin-Ho Bae ◽  
Hyunwoong Seo ◽  
Masaharu Shiratani ◽  
Chandu Venkata Veera Muralee Gopi
Keyword(s):  
Solar Cells ◽  
Quantum Dot ◽  
High Performance ◽  
Open Circuit Voltage ◽  
Charge Recombination ◽  
Open Circuit ◽  
Passivation Layer ◽  
Voltage Decay ◽  
Sensitized Solar Cells ◽  
Η Value

Suppressing the charge recombination at the interface of photoanode/electrolyte is the crucial way to improve the quantum dot sensitized solar cells (QDSSCs) performance. In this scenario, ZnS/SiO2 blocking layer was deposited on TiO2/CuInS2 QDs to inhibit the charge recombination at photoanode/electrolyte interface. As a result, the TiO2/CuInS2/ZnS/SiO2 based QDSSCs delivers a power conversion efficiency (η) value of 4.63%, which is much higher than the TiO2/CuInS2 (2.15%) and TiO2/CuInS2/ZnS (3.23%) based QDSSCs. Impedance spectroscopy and open circuit voltage decay analyses indicate that ZnS/SiO2 passivation layer on TiO2/CuInS2 suppress the charge recombination at the interface of photoanode/electrolyte and enhance the electron lifetime.

Defect passivation by alcohol-soluble small molecules for efficient p–i–n planar perovskite solar cells with high open-circuit voltage

2019 ◽  
Vol 7 (37) ◽  
pp. 21140-21148 ◽  
Author(s):  
Kang Chen ◽  
Jingnan Wu ◽  
Yanan Wang ◽  
Qing Guo ◽  
Qiaoyun Chen ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecules ◽  
Small Molecule ◽  
Open Circuit Voltage ◽  
Perovskite Solar Cells ◽  
Open Circuit ◽  
Defect Passivation

A π-conjugated and alcohol-soluble small molecule was used to passivate defects in p–i–n Pero-SCs with a PCE of 21.40% and Voc of 1.19 V.

High-performance nonfullerene polymer solar cells based on a fluorinated wide bandgap copolymer with a high open-circuit voltage of 1.04 V

2017 ◽  
Vol 5 (42) ◽  
pp. 22180-22185 ◽  
Author(s):  
Yan Wang ◽  
Qunping Fan ◽  
Xia Guo ◽  
Wanbin Li ◽  
Bing Guo ◽  
...  
Keyword(s):  
Solar Cells ◽  
Energy Loss ◽  
Small Molecule ◽  
High Performance ◽  
Open Circuit Voltage ◽  
Polymer Solar Cells ◽  
Wide Bandgap ◽  
Open Circuit

Nonfullerene polymer solar cells based on a polymer donor PM6 containing a fluorinated-thienyl benzodithiophene unit and a small molecule acceptor ITIC showed a PCE of 9.7% with a Voc of up to 1.04 V and an energy loss as low as 0.51 eV.

An approach to high open-circuit voltage polymer solar cells via alcohol/water-soluble cathode interlayers based on anthrathiadiazole derivatives

2017 ◽  
Vol 41 (21) ◽  
pp. 13166-13174 ◽  
Author(s):  
Yang Miao ◽  
Tong Yang ◽  
Zong Cheng ◽  
Yuewei Zhang ◽  
Jingying Zhang ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Performance ◽  
Open Circuit Voltage ◽  
Polymer Solar Cells ◽  
Open Circuit ◽  
Water Soluble ◽  
High Performance Polymer ◽  
Alcohol Water ◽  
Water Alcohol

Two water/alcohol-soluble small molecular cathode interlayers (CILs) were synthesized and employed to fabricate high performance polymer solar cells (PSCs) with a large open-circuit voltage (Voc) of 0.93 V.

A novel p-type and metallic dual-functional Cu–Al2O3 ultra-thin layer as the back electrode enabling high performance of thin film solar cells

2016 ◽  
Vol 52 (71) ◽  
pp. 10708-10711 ◽  
Author(s):  
Qinxian Lin ◽  
Yantao Su ◽  
Ming-Jian Zhang ◽  
Xiaoyang Yang ◽  
Sheng Yuan ◽  
...  
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Performance Improvement ◽  
High Performance ◽  
Fill Factor ◽  
Open Circuit Voltage ◽  
Open Circuit ◽  
Thin Film Solar Cells ◽  
Dual Functional ◽  
P Type

Increasing the open-circuit voltage (Voc) along with the fill factor (FF) is pivotal for the performance improvement of solar cells.

Sign in / Sign up

Export Citation Format

Share Document