Exploring spin-orbital coupling effects on photovoltaic actions in Sn and Pb based perovskite solar cells

Nano Energy ◽  
2017 ◽  
Vol 38 ◽  
pp. 297-303 ◽  
Author(s):  
Jia Zhang ◽  
Ting Wu ◽  
Jiashun Duan ◽  
Mahshid Ahmadi ◽  
Fangyuan Jiang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Coupling Effects ◽  
Spin Orbital ◽  
Spin Orbital Coupling

Introducing optically polarizable molecules into perovskite solar cells by simultaneously enhanced spin–orbital coupling, suppressed non-radiative recombination and improved transport balance towards enhancing photovoltaic actions

2018 ◽  
Vol 6 (23) ◽  
pp. 6164-6171 ◽  
Author(s):  
Changfeng Han ◽  
Haomiao Yu ◽  
Jiashun Duan ◽  
Kai Lu ◽  
Jia Zhang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Radiative Recombination ◽  
Perovskite Solar Cells ◽  
Spin Orbital ◽  
Spin Orbital Coupling

Introducing optically polarizable molecules into perovskite solar cells can enhance photovoltaic actions.

Strain and Spin–Orbital Coupling Effects on Electronic Structures and Magnetism of Semi-Hydrogenated Stanene

2016 ◽  
Vol 120 (19) ◽  
pp. 10622-10628 ◽  
Author(s):  
Wenqi Xiong ◽  
Congxin Xia ◽  
Tianxing Wang ◽  
Yuting Peng ◽  
Yu Jia
Keyword(s):  
Electronic Structures ◽  
Coupling Effects ◽  
Spin Orbital ◽  
Spin Orbital Coupling

Prediction of spin–orbital coupling effects on the electronic structure of two dimensional van der Waals heterostructures

2015 ◽  
Vol 17 (46) ◽  
pp. 31253-31259 ◽  
Author(s):  
Baiqing You ◽  
Xiaocha Wang ◽  
Wenbo Mi
Keyword(s):  
Electronic Structure ◽  
First Principles ◽  
2D Materials ◽  
Van Der Waals ◽  
Two Dimensional ◽  
Coupling Effects ◽  
Van Der Waals Heterostructures ◽  
Spin Orbital ◽  
First Principles Study ◽  
Spin Orbital Coupling

We report a first-principles study on the electronic structure of van der Waals (vdW) heterostructures consisting of two dimensional (2D) materials.

Improvement of Photovoltaic Response Using Triplet Excitons

2006 ◽  
Vol 974 ◽  
Author(s):  
Zhihua Xu ◽  
Bin Hu
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Charge Carriers ◽  
Large Field ◽  
Triplet States ◽  
Spin Orbital ◽  
Photovoltaic Response ◽  
Donor Acceptor ◽  
Triplet Excitons ◽  
Spin Orbital Coupling

ABSTRACTWe report an enhancement of photovoltaic response by dispersing phosphorescent dye fac tris (2-phenylpyridine) iridium (Ir(ppy)3) in organic solar cells of poly[2-methoxy-5-(2¡¦-ethylhexyloxy)-1,4-phenylenevinylene] (MEH-PPV) doped with surface-functionalized fullerene 1-(3-methyloxycarbonyl)propy(1-phenyl [6,6] C61 (PCBM). It is known that photoexcitation generates both singlet and triplet states through intersystem crossing caused by hyperfine or spin-orbital coupling. Due to long diffusion length the triplet excitons can migrate from their generation sites to the interfaces of donor-acceptor interaction and directly dissociate into charge carriers. We found, based on the studies of magnetic field-dependent photocurrent, that the dispersed Ir(ppy)3 molecules increase the spin-orbital coupling strength and triplet density in the MEH-PPV matrix due to the penetration of MEH-PPV π electrons into the large field of orbital dipoles of the Ir(ppy)3. Especially, the triplet excitons facilitate the direct dissociation into charge carriers at the donor-acceptor interacting interfaces in the composite of MEH-PPV and PCBM, and consequently improve the photovoltaic response in organic solar cells.

Exploring mechanisms for generating spin-orbital coupling through donor–acceptor design to realize spin flipping in thermally activated delayed fluorescence

2020 ◽  
Vol 8 (10) ◽  
pp. 3395-3401 ◽  
Author(s):  
Miaosheng Wang ◽  
Tanmay Chatterjee ◽  
Camera Janelle Foster ◽  
Ting Wu ◽  
Chih-Lun Yi ◽  
...  
Keyword(s):  
High Efficiency ◽  
Delayed Fluorescence ◽  
Coupling Effects ◽  
Optical Studies ◽  
Spin Orbital ◽  
Thermally Activated Delayed Fluorescence ◽  
Thermally Activated ◽  
Donor Acceptor ◽  
Dependent Processes ◽  
Spin Orbital Coupling

Spin-orbital coupling effects and the underlying spin-dependent processes to achieve high-efficiency TADF are revealed based on magneto-optical studies.

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