Ultrasonically sprayed-on perovskite solar cells-effects of organic cation on defect formation of CH3NH3PbI3 films

2019 ◽  
Vol 19 (12) ◽  
pp. 1427-1435
Author(s):  
Nakorn Henjongchom ◽  
Nopporn Rujisamphan ◽  
Teneng Stanilius Ntia ◽  
Pisist Kumnorkaew ◽  
I-Ming Tang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Cation ◽  
Defect Formation ◽  
Perovskite Solar Cells

Organic-cation-mixed (FA,MA)PbI3 through sequential vapor growth for planar perovskite solar cells

Solar Energy ◽  
2019 ◽  
Vol 178 ◽  
pp. 56-60 ◽  
Author(s):  
Won-Gyu Choi ◽  
Sungjae Na ◽  
Chan-Gyu Park ◽  
Taeho Moon
Keyword(s):  
Solar Cells ◽  
Organic Cation ◽  
Perovskite Solar Cells ◽  
Vapor Growth

A strategic review on processing routes towards highly efficient perovskite solar cells

2018 ◽  
Vol 6 (6) ◽  
pp. 2406-2431 ◽  
Author(s):  
Ashish Dubey ◽  
Nirmal Adhikari ◽  
Sally Mabrouk ◽  
Fan Wu ◽  
Ke Chen ◽  
...  
Keyword(s):  
Solar Cells ◽  
Metal Cation ◽  
Organic Cation ◽  
Perovskite Solar Cells ◽  
Inorganic Perovskite ◽  
Highly Efficient ◽  
Strategic Review

An organic–inorganic perovskite is comprised of an organic cation (CH3NH3+, FAI, or Cs), a metal cation (Pb2+or Sn2+) and a halide (I−, Cl−, or Br−) molecule.

Direct formation of I3- ions in organic cation solution for efficient perovskite solar cells

2018 ◽  
Vol 185 ◽  
pp. 111-116 ◽  
Author(s):  
Qiang Sun ◽  
Xiu Gong ◽  
Hao Li ◽  
Shuangshuang Liu ◽  
Xiaojuan Zhao ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Cation ◽  
Perovskite Solar Cells ◽  
Direct Formation

scholarly journals Influence of the mixed organic cation ratio in lead iodide based perovskite on the performance of solar cells

2016 ◽  
Vol 18 (39) ◽  
pp. 27148-27157 ◽  
Author(s):  
Manuel Salado ◽  
Laura Calio ◽  
Rüdiger Berger ◽  
Samrana Kazim ◽  
Shahzada Ahmad
Keyword(s):  
Solar Cells ◽  
Organic Cation ◽  
Perovskite Solar Cells ◽  
Lead Iodide ◽  
Mixed Cation ◽  
Cation Ratio

Perovskite solar cells were fabricated using the mixed organic cation of formamidinium and methylammonium. The mixed cation having the composition MA0.6FA0.4PbI3 shows almost negligible I–V hysteresis and better photostability than pure MAPbI3 and FAPbI3.

scholarly journals Improving the triple-cation perovskite solar cells by two-step deposition methods with perovskite seeds

2021 ◽  
Vol 2145 (1) ◽  
pp. 012028
Author(s):  
P Phiromruk ◽  
S Chatraphorn
Keyword(s):  
Solar Cells ◽  
Spin Coating ◽  
Organic Cation ◽  
Perovskite Solar Cells ◽  
Deposition Process ◽  
Device Performance ◽  
Perovskite Layer ◽  
Cesium Ion ◽  
Ion Incorporation ◽  
Lead Halide

Abstract As of recent years, triple-cation perovskite solar cells have received immense attention due to its superior efficiency and better stability comparing to the classic single-cation perovskite solar cells such as MAPbI3 or FAPbI3. A triple-cation perovskite layer which has been used most recently is cesium-containing FAPbI3-based perovskite. One of decent approaches to fabricate the layer is spin-coating technique by using two-step deposition process in which mixed lead-halide and CsI precursor is firstly spin-coated onto a substrate, then organic cation solution is deposited on the lead-halide layer. In this work, the results show that the performance of the devices from this process is lower than expected that could be due to difficulty of cesium ion incorporation as a stabilizer for FAPbI3-based perovskite. Perovskite seeding growth is introduced to solve the problem where the process is slightly modified from conventional two-step deposition methods by adding small amount of perovskite seed precursor into PbI2 solution. The concentration of the perovskite seed in PbI2 solution was varied for 0, 7, 14 and 20% v/v. The highest average efficiency of 11.9% was obtained from 7% v/v seeding concentration. Furthermore, the device performance could be improved by using proper amount of chlorobenzene (CB) as an anti-solvent. The highest efficiency of 18.4% was achieved by using 30 µl of chlorobenzene.

Single Vs Mixed Organic Cation for Low Temperature Processed Perovskite Solar Cells

2016 ◽  
Vol 222 ◽  
pp. 1510-1521 ◽  
Author(s):  
Md Arafat Mahmud ◽  
Naveen Kumar Elumalai ◽  
Mushfika Baishakhi Upama ◽  
Dian Wang ◽  
Matthew Wright ◽  
...  
Keyword(s):  
Solar Cells ◽  
Low Temperature ◽  
Organic Cation ◽  
Perovskite Solar Cells

Organic cation rotation in HC(NH2)2PbI3 perovskite solar cells: DFT & DOE approach

Solar Energy ◽  
2021 ◽  
Vol 220 ◽  
pp. 70-79
Author(s):  
Seyed Farshad Akhtarianfar ◽  
Saeid Shojaei ◽  
Shahin Khameneh Asl
Keyword(s):  
Solar Cells ◽  
Organic Cation ◽  
Perovskite Solar Cells

scholarly journals Pulsatile therapy for perovskite solar cells

2021 ◽  
Author(s):  
Mansoo Choi ◽  
Kiwan Jeong ◽  
Junseop Byeon ◽  
Jihun Jang ◽  
Namyoung Ahn
Keyword(s):  
Solar Cells ◽  
Reverse Bias ◽  
Defect Formation ◽  
Perovskite Solar Cells ◽  
Steady Increase ◽  
Point Tracking ◽  
Hybrid Perovskite ◽  
Pl Intensity ◽  
Power Point

Abstract Although photovoltaics employing hybrid perovskite halides have continuously been breaking world- records of power conversion efficiency (PCE) and expectations for their industrialization are rapidly rising, long-term stability issue that has greatly hampered the commercialization of perovskite solar cells has not been resolved yet. Ion instability and trapped charges were suggested as a fundamental reason for perovskite device degradation. Here, we report a pulsatile therapy relieving the accumulation of both trapped charges and ions in the perovskite solar cell device during the middle of maximum power point tracking (MPPT) for reviving the device and prolonging its device lifetime. In the technique, reverse biases are repeatedly applied for a very short time to eliminate the charges accumulated and re-distribute the ions migrated during power harvesting without any pause of operation. Intriguingly, the therapy is not only delaying irreversible degradation, but also, restoring the degraded power right after a short reverse bias. In-situ photoluminescence (PL) and photocurrent (PC) measurements for the working device were done while applying the pulsatile therapy for studying the underlying physics. Time evolving PL intensity and PC not only revealed the steady increase of PL intensity during the therapy indicating the reduction of non-radiative recombination, but also strikingly showed the restoration of degraded PL intensity and PC right after a short reverse bias suggesting the device healing. In the long-term test, we observed outstanding improvement of device stability and total harvesting power. A model considering trap-assisted recombination has also been developed to explain the efficacy of the therapy based on defect formation during MPPT operation and defect healing by the pulsatile therapy. The unique technique will open up new possibility to commercialize perovskite materials into a real market.

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