scholarly journals Performance Improvements in Polymer Nanofiber/Fullerene Solar Cells with External Electric Field Treatment

2014 ◽  
Vol 118 (21) ◽  
pp. 11285-11291 ◽  
Author(s):  
Ankur Solanki ◽  
Bo Wu ◽  
Teddy Salim ◽  
Edwin Kok Lee Yeow ◽  
Yeng Ming Lam ◽  
...  
Keyword(s):  
Solar Cells ◽  
Electric Field ◽  
External Electric Field ◽  
Performance Improvements ◽  
Polymer Nanofiber ◽  
Electric Field Treatment

Enhanced Open Circuit Voltage in Aluminum Confined Post-Annealing of poly(3-hexylthiophene)/fullerene Bulk Heterojunction Solar Cells under Electric Field

2012 ◽  
Vol 1390 ◽  
Author(s):  
Mukesh Kumar ◽  
Pavel Dutta ◽  
Venkat Bommisetty
Keyword(s):  
Solar Cells ◽  
Electric Field ◽  
External Electric Field ◽  
Reverse Bias ◽  
Bulk Heterojunction ◽  
Interface Composition ◽  
Heterojunction Solar Cells ◽  
Bulk Heterojunction Solar Cells ◽  
Photocurrent Spectroscopy ◽  
Post Annealing

ABSTRACTThe effect of an external electric field during post-annealing on the device characteristics of poly(3-hexylthiophene) (P3HT) and phenyl-C61butyric acid methyl ester (PCBM) bulk heterojunction solar cells was studied. The application of external electric field in forward bias resulted in significant enhancement in Voc and fill factor whereas devices annealed under reverse bias had an enhanced Jsc. Both forward and reverse bias annealing increased the shunt resistance. The Al - blend interface topography and carrier dynamics were studied using conducting atomic force microscopy and frequency dependent intensity modulated photocurrent spectroscopy (IMPS). The results indicate that post-annealing under external electric field can be used to engineer the interface composition to enhance the charge transport in bulk heterojunction solar cells to improve the device performance.

scholarly journals Formation of a Fast Charge Transfer Channel in Quasi-2D Perovskite Solar Cells through External Electric Field Modulation

Energies ◽  
2021 ◽  
Vol 14 (21) ◽  
pp. 7402
Author(s):  
Xixiang Zhu ◽  
Liping Peng ◽  
Jinpeng Li ◽  
Haomiao Yu ◽  
Yulin Xie
Keyword(s):  
Solar Cells ◽  
Charge Transfer ◽  
Electric Field ◽  
Quantum Wells ◽  
External Electric Field ◽  
Perovskite Solar Cells ◽  
Fast Charge ◽  
Transfer Channel ◽  
Local Polarization ◽  
Field Modulation

Quasi-2D perovskites solar cells exhibit excellent environmental stability, but relatively low photovoltaic properties, compared with 3D perovskites solar cells. However, charge transport and extraction in quasi-2D perovskite solar cells are still limited by the inevitable quantum well effect, resulting in low power conversion efficiency (PCE). To date, most efforts concentrate on crystal orientation and favorable alignment during materials and films processing. In this paper, we demonstrated that the quasi-2D perovskite [(BA)2(MA)3Pb4I13 (n = 4)] solar cells show an optimized device performance through forming a fast charge transfer channel among 2D quantum wells through external electric field modulation, with appropriate modulation bias and time after the device has been fabricated. Essentially, ions will move directionally due to local polarization in quasi-2D perovskite solar cells under the action of electric field modulation. More importantly, the mobile ions function as a dopant to de-passivate the defects when releasing at grain boundaries, while decreasing built-in potential by applying forward modulation bias with proper modulation time. The capacitance-voltage characteristics indicate that electric field modulation can decrease the charge accumulation and improve the charge collection in quasi-2D perovskite solar cells. Photoluminescence (PL) studies confirm that the non-radiative recombination is reduced by electric field modulation, leading to enhanced charge transfer. Our work indicates that external electric field modulation is an effective method to form a fast charge transfer channel among 2D quantum wells, leading to enhanced charge transfer and charge collection through local polarization toward developing high–performance quasi-2D perovskite devices.

Morphological modification induced by external electric field during solution process of organic solar cells

2012 ◽  
Vol 13 (2) ◽  
pp. 297-301 ◽  
Author(s):  
Shou-Yuan Ma ◽  
Yu-Min Shen ◽  
Po-Ching Yang ◽  
Chao-Shuo Chen ◽  
Ching-Fuh Lin
Keyword(s):  
Solar Cells ◽  
Electric Field ◽  
External Electric Field ◽  
Organic Solar Cells ◽  
Solution Process ◽  
Morphological Modification

Electric-field assisted perovskite crystallization for high-performance solar cells

2018 ◽  
Vol 6 (3) ◽  
pp. 1161-1170 ◽  
Author(s):  
Cong-Cong Zhang ◽  
Zhao-Kui Wang ◽  
Meng Li ◽  
Zhi-Yong Liu ◽  
Ji-En Yang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Electric Field ◽  
External Electric Field ◽  
High Performance ◽  
Perovskite Solar Cells ◽  
Annealing Treatment ◽  
Inorganic Perovskite ◽  
Photoelectric Performance

We develop an external-electric-field (EEF)-assisted annealing treatment to improve the photoelectric performance of planar organic–inorganic perovskite solar cells (PSCs).

The effect of external electric field on the performance of perovskite solar cells

2015 ◽  
Vol 18 ◽  
pp. 107-112 ◽  
Author(s):  
Xiaodong Li ◽  
Xueyan Wang ◽  
Wenjun Zhang ◽  
Yulei Wu ◽  
Feng Gao ◽  
...  
Keyword(s):  
Solar Cells ◽  
Electric Field ◽  
External Electric Field ◽  
Perovskite Solar Cells

Performance and stability of PTB7:PC71BM based polymer solar cells, with ECZ and/or PVK dopants, under the application of an external electric field

2016 ◽  
Vol 27 (6) ◽  
pp. 6271-6281 ◽  
Author(s):  
Armando Álvarez-Fernández ◽  
José-Luis Maldonado ◽  
Enrique Pérez-Gutiérrez ◽  
Mario Rodríguez ◽  
Gabriel Ramos-Ortíz ◽  
...  
Keyword(s):  
Solar Cells ◽  
Electric Field ◽  
External Electric Field ◽  
Polymer Solar Cells

The effect of an external electric field on thermally-deposited thin CdS/CdTe-based solar cells

2015 ◽  
Vol 29 (32) ◽  
pp. 1550238
Author(s):  
Ke Ming Wan ◽  
Yu Jun Zhang ◽  
Ping Li ◽  
Gang Wang ◽  
Jin Xiang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Electric Field ◽  
External Electric Field ◽  
Electric Fields ◽  
Cell Performance ◽  
Cell Junction ◽  
Initial State ◽  
Solar Cell Performance ◽  
Carrier Separation

Conventional and inverted thin CdS/CdTe-based solar cells are fabricated using thermal deposition techniques, and their performance under an external electric field is investigated. Results show that both positive and negative electric fields can change the performance of the developed solar cells and that the latter recover to their initial state after switching the external electric field off. Heat treatment experiments confirm the negligible impact of the temperature on the solar cell performance. Transient photocurrent experiments show that the carrier transfer efficiency is modulated directly by an external electric field. By taking into account the CdS nanodipole, the effect of an external electric field on the solar cell performance can be well explained. The results presented in this paper open the way toward the realization of solar cells through carrier separation by an electric field provided by the CdS nanodipoles rather than the solar cell junction.

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