Monolayer HfTeSe4: A Promising Two-Dimensional Photovoltaic Material for Solar Cells with High Efficiency

2019 ◽  
Vol 11 (41) ◽  
pp. 37901-37907 ◽  
Author(s):  
Hongchao Yang ◽  
Yandong Ma ◽  
Yan Liang ◽  
Baibiao Huang ◽  
Ying Dai
Keyword(s):  
Solar Cells ◽  
High Efficiency ◽  
Two Dimensional ◽  
Photovoltaic Material

scholarly journals Stable High-Efficiency Two-Dimensional Perovskite Solar Cells Via Bromine Incorporation

2020 ◽  
Vol 15 (1) ◽  
Author(s):  
Feng Han ◽  
Wenyao Yang ◽  
Hao Li ◽  
Lei Zhu
Keyword(s):  
Solar Cells ◽  
High Efficiency ◽  
Photovoltaic Performance ◽  
Perovskite Solar Cells ◽  
Three Dimensional ◽  
State Density ◽  
Environmental Stability ◽  
Two Dimensional ◽  
Superior Surface ◽  
Photovoltaic Material

Abstract Two-dimensional (2D) organic-inorganic perovskites as one of the most important photovoltaic material used in solar cells have attracted remarkable attention. These 2D perovskites exhibit superior environmental stability and wide tunability of their optoelectronic properties. However, their photovoltaic performance is far behind those of traditional three-dimensional (3D) perovskites. In this work, we demonstrate the power conversion efficiency (PCE) of 2D perovskite solar cells (PVSCs) is greatly improved from 3.01% for initial to 12.19% by the incorporation of PbBr2. The enhanced efficiency is attributed to superior surface quality, enhanced crystallinity, and the resulting reduced trap-state density. Furthermore, PbBr2 incorporated devices without encapsulation show excellent humidity stability, illumination stability, and thermal stability. This work provides a universal and viable avenue toward efficient and stable 2D PVSCs.

Universal approach toward high-efficiency two-dimensional perovskite solar cells via a vertical-rotation process

2020 ◽  
Vol 13 (9) ◽  
pp. 3093-3101 ◽  
Author(s):  
Yi Yang ◽  
Cheng Liu ◽  
Arup Mahata ◽  
Mo Li ◽  
Cristina Roldán-Carmona ◽  
...  
Keyword(s):  
Solar Cells ◽  
Charge Transport ◽  
Transport Properties ◽  
Crystal Orientation ◽  
High Efficiency ◽  
Perovskite Solar Cells ◽  
Two Dimensional ◽  
Universal Approach

A universal vertically-rotated (VR) methodology is proposed to rotate the crystal orientation of 2D perovskites, which improves charge transport properties by several orders of magnitude and boosts the efficiency of 2D (n ≤ 4) PSCs to above 17%.

scholarly journals High-efficiency two-dimensional Ruddlesden–Popper perovskite solar cells

Nature ◽  
2016 ◽  
Vol 536 (7616) ◽  
pp. 312-316 ◽  
Author(s):  
Hsinhan Tsai ◽  
Wanyi Nie ◽  
Jean-Christophe Blancon ◽  
Constantinos C. Stoumpos ◽  
Reza Asadpour ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Efficiency ◽  
Perovskite Solar Cells ◽  
Two Dimensional

Highly oriented two-dimensional formamidinium lead iodide perovskites with a small bandgap of 1.51 eV

2018 ◽  
Vol 2 (1) ◽  
pp. 121-128 ◽  
Author(s):  
Jielin Yan ◽  
Weifei Fu ◽  
Xinqian Zhang ◽  
Jiehuan Chen ◽  
Weitao Yang ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Efficiency ◽  
Good Stability ◽  
Two Dimensional ◽  
Lead Iodide

Small bandgap 2D perovskites were synthesized with desired orientation and the corresponding solar cells presented high efficiency and good stability.

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