Efficient and Stable Wide Bandgap Perovskite Solar Cells through Surface Passivation with Long Alkyl Chain Organic Cations

2021 ◽  
Author(s):  
The Duong ◽  
Huyen Pham ◽  
Yanting Yin ◽  
Jun Peng ◽  
Md Arafat Mahmud ◽  
...  
Keyword(s):  
Solar Cells ◽  
Surface Passivation ◽  
Alkyl Chain ◽  
Perovskite Solar Cells ◽  
Wide Bandgap ◽  
Organic Cations ◽  
Defect Passivation ◽  
Key Factor ◽  
Carrier Traps ◽  
Long Alkyl Chain

Defects on perovskite surfaces acting as charge-carrier-traps are a key factor limiting the performance of perovskite solar cells (PSCs). Here we studied the defect passivation effect of three bromide-containing alkylammonium...

Deep Surface Passivation for Efficient and Hydrophobic Perovskite Solar Cells

2021 ◽  
Author(s):  
Yongqing Cai ◽  
Junmin Xia ◽  
Chao Liang ◽  
Shiliang Mei ◽  
Hao Gu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Robust Control ◽  
Surface Passivation ◽  
Perovskite Solar Cells ◽  
Deep Surface ◽  
Defect Passivation

Defect passivation has developed as an attractive approach to promoting the performance of perovskite solar cells. However, robust control of the interplay between the defects and adsorbates is challenging and...

Correlating alkyl chain length with defect passivation efficacy in perovskite solar cells

2020 ◽  
Vol 56 (37) ◽  
pp. 5006-5009 ◽  
Author(s):  
Wenhuai Feng ◽  
Chengxi Zhang ◽  
Jun-Xing Zhong ◽  
Liming Ding ◽  
Wu-Qiang Wu
Keyword(s):  
Solar Cells ◽  
Chain Length ◽  
Alkyl Chain ◽  
Perovskite Solar Cells ◽  
Charge Recombination ◽  
Alkyl Chain Length ◽  
Defect Passivation ◽  
Amine Ligands ◽  
Chain Lengths

Anchoring of amine ligands with different alkyl chain lengths on perovskites mitigates non-radiative charge recombination in perovskite solar cells.

Grain Boundary Defect Passivation in Quadruple Cation Wide‐Bandgap Perovskite Solar Cells

Solar RRL ◽  
2021 ◽  
Vol 5 (4) ◽  
pp. 2000740
Author(s):  
Khan Mamun Reza ◽  
Ashim Gurung ◽  
Behzad Bahrami ◽  
Ashraful Haider Chowdhury ◽  
Nabin Ghimire ◽  
...  
Keyword(s):  
Solar Cells ◽  
Grain Boundary ◽  
Perovskite Solar Cells ◽  
Wide Bandgap ◽  
Boundary Defect ◽  
Defect Passivation

scholarly journals A Compact and Smooth CH3NH3PbI3 Film: Investigation of Solvent Sorts and Concentrations of CH3NH3I towards Highly Efficient Perovskite Solar Cells

Nanomaterials ◽  
2018 ◽  
Vol 8 (11) ◽  
pp. 897 ◽  
Author(s):  
Liang Chen ◽  
Hao Zhang ◽  
Jiyuan Zhang ◽  
Yong Zhou
Keyword(s):  
Solar Cells ◽  
Alkyl Chain ◽  
High Surface ◽  
Solvent Molecule ◽  
Perovskite Solar Cells ◽  
Butyl Alcohol ◽  
Amyl Alcohol ◽  
Rapid Generation ◽  
Long Alkyl Chain

Four solvents (isopropanol (IPA), n-butyl alcohol (NBA), n-amyl alcohol (NAA), and n-hexyl alcohol (NHA)) were investigated to prepare CH3NH3I (methylammonium iodide, MAI) solutions to transform PbI2 film into CH3NH3PbI3 (MAPbI3) film. It was found that the morphology of the perovskite MAPbI3 film was not only affected by the chain of the solvent molecule, but also by the concentration of MAI. The use of solvents with a long alkyl chain (NAA and NHA) allowed the MAPbI3 to grow via an in situ transformation step, which easily made the perovskite films compact, but with a high surface roughness due to the growth of unexpected nanorods/nanoplates. The solvent with a short alkyl chain (IPA) led to the dissolution−crystallization growth mechanism, resulting in rapid generation of perovskite films with a number of pinholes. A high-quality (compact, smooth, pinhole-free) perovskite film was obtained with NBA and an optimized MAI concentration of 8 mg/mL. The corresponding perovskite solar cells achieved a maximum power conversion efficiency (PCE) of 16.66% and average PCE of 14.76% (for 40 cells).

Multifunctional Chemical Bridge and Defect Passivation for Highly Efficient Inverted Perovskite Solar Cells

2021 ◽  
pp. 1596-1606
Author(s):  
Qisen Zhou ◽  
Junming Qiu ◽  
Yunfei Wang ◽  
Mei Yu ◽  
Jianhua Liu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Highly Efficient ◽  
Defect Passivation

Efficient Defect Passivation with Niacin for High-Performance and Stable Perovskite Solar Cells

2021 ◽  
Author(s):  
Jing Ren ◽  
Shurong Wang ◽  
Jianxing Xia ◽  
Chengbo Li ◽  
Lisha Xie ◽  
...  
Keyword(s):  
Solar Cells ◽  
Charge Carrier ◽  
High Performance ◽  
Perovskite Solar Cells ◽  
Trap States ◽  
Carrier Recombination ◽  
Defect Passivation ◽  
Recombination Centers ◽  
Charge Carrier Recombination ◽  
Halide Perovskite

Defects, inevitably produced in the solution-processed halide perovskite films, can act as charge carrier recombination centers to induce severe energy loss in perovskite solar cells (PSCs). Suppressing these trap states...

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).

Sign in / Sign up

Export Citation Format

Share Document