Direct growth of graphene nanowalls on quartz substrates as transparent conductive electrodes for perovskite solar cells

2018 ◽  
Vol 11 (01) ◽  
pp. 1850009 ◽  
Author(s):  
Guanhua Lin ◽  
Yaqing Zhou ◽  
Yu Wang ◽  
Xin Yan ◽  
Baoshan Wu ◽  
...  

An effective method to directly produce high-quality graphene nanowalls (GNWs) on quartz substrates was demonstrated using an advanced self-assembled ratio-frequency plasma-enhanced horizontal tube furnace deposition system under different growth times from 60[Formula: see text]s to 150[Formula: see text]s at a substrate temperature of 850[Formula: see text]C without using any catalyst. The synthesized well-connected three-dimensional GNWs feature outstanding electrical and optical performance: the sheet resistance varies from 1053 [Formula: see text]/[Formula: see text] to 342 [Formula: see text]/[Formula: see text], while the corresponding transmittance ranges from 90.4% to 67.8% at a wavelength of 550[Formula: see text]nm under different growth times. We have also demonstrated that GNWs can be used as transparent conductive electrodes for perovskite solar cells. The highest photovoltaic conversion efficiency of 6.93% can be obtained for the GNWs deposited at a growth time of 120[Formula: see text]s. Hence, our study paves a new way of using GNWs as transparent conductive electrodes in perovskite solar cells.

2016 ◽  
Vol 61 (10) ◽  
pp. 778-786 ◽  
Author(s):  
Hao Lu ◽  
Kaimo Deng ◽  
Nina Yan ◽  
Yulong Ma ◽  
Bangkai Gu ◽  
...  

2019 ◽  
Vol 2 (11) ◽  
pp. 8173-8180 ◽  
Author(s):  
Luyao Zhao ◽  
Lele Qiu ◽  
Debin Xia ◽  
Shihui Liu ◽  
Xiaoqing Yi ◽  
...  

Nanoscale ◽  
2018 ◽  
Vol 10 (44) ◽  
pp. 20836-20843 ◽  
Author(s):  
Chi Chen ◽  
Shufang Wu ◽  
Jinming Wang ◽  
Siyao Chen ◽  
Tianyou Peng ◽  
...  

A rutile TiO2 nanodendrite array (3D-RTNDA) containing trunks and branches as transport layer is fabricated for high-performance perovskite solar cells.


ACS Nano ◽  
2015 ◽  
Vol 9 (1) ◽  
pp. 564-572 ◽  
Author(s):  
Yanhao Yu ◽  
Jianye Li ◽  
Dalong Geng ◽  
Jialiang Wang ◽  
Lushuai Zhang ◽  
...  

2018 ◽  
Vol 6 (18) ◽  
pp. 8251-8258 ◽  
Author(s):  
Jin Hyuck Heo ◽  
Dong Hee Shin ◽  
Dae Ho Song ◽  
Do Hun Kim ◽  
Sang Jin Lee ◽  
...  

Super-flexible bis(trifluoromethanesulfonyl)-amide (TFSA)-doped graphene transparent conducting electrode (GR TCE)-based FAPbI3 − xBrx perovskite solar cells with 18.9% power conversion efficiency (PCE) for a rigid device and 18.3% for a flexible one are demonstrated because the TFSA-doped GR TCE reveals high conductivity and high transmittance.


2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Md. Shahiduzzaman ◽  
Mohammad Ismail Hossain ◽  
Sem Visal ◽  
Tetsuya Kaneko ◽  
Wayesh Qarony ◽  
...  

AbstractThe photovoltaic performance of perovskite solar cells (PSCs) can be improved by utilizing efficient front contact. However, it has always been a significant challenge for fabricating high-quality, scalable, controllable, and cost-effective front contact. This study proposes a realistic multi-layer front contact design to realize efficient single-junction PSCs and perovskite/perovskite tandem solar cells (TSCs). As a critical part of the front contact, we prepared a highly compact titanium oxide (TiO2) film by industrially viable Spray Pyrolysis Deposition (SPD), which acts as a potential electron transport layer (ETL) for the fabrication of PSCs. Optimization and reproducibility of the TiO2 ETL were discreetly investigated while fabricating a set of planar PSCs. As the front contact has a significant influence on the optoelectronic properties of PSCs, hence, we investigated the optics and electrical effects of PSCs by three-dimensional (3D) finite-difference time-domain (FDTD) and finite element method (FEM) rigorous simulations. The investigation allows us to compare experimental results with the outcome from simulations. Furthermore, an optimized single-junction PSC is designed to enhance the energy conversion efficiency (ECE) by > 30% compared to the planar reference PSC. Finally, the study has been progressed to the realization of all-perovskite TSC that can reach the ECE, exceeding 30%. Detailed guidance for the completion of high-performance PSCs is provided.


Nanophotonics ◽  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Tianqi Niu ◽  
Qifan Xue ◽  
Hin-Lap Yip

Abstract Low-dimensional metal halide perovskites have emerged as promising alternatives to the traditional three-dimensional (3D) components, due to their greater structural tunability and environmental stability. Dion-Jacobson (DJ) phase two-dimensional (2D) perovskites, which are formed by incorporating bulky organic diammonium cations into inorganic frameworks that comprises a symmetrically layered array, have recently attracted increasing research interest. The structure-property characteristics of DJ phase perovskites endow them with a unique combination of photovoltaic efficiency and stability, which has led to their impressive employment in perovskite solar cells (PSCs). Here, we review the achievements that have been made to date in the exploitation of DJ phase perovskites in photovoltaic applications. We summarize the various ligand designs, optimization strategies and applications of DJ phase PSCs, and examine the current understanding of the mechanisms underlying their functional behavior. Finally, we discuss the remaining bottlenecks and future outlook for these promising materials, and possible development directions of further commercial processes.


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