Self-powered and flexible perovskite photodiode/solar cell bifunctional devices with MoS2 hole transport layer

2020 ◽  
Vol 514 ◽  
pp. 145880 ◽  
Author(s):  
Dong Hee Shin ◽  
Seung Hyun Shin ◽  
Suk-Ho Choi
2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Amir Muhammad Afzal ◽  
In-Gon Bae ◽  
Yushika Aggarwal ◽  
Jaewoo Park ◽  
Hye-Ryeon Jeong ◽  
...  

AbstractHybrid organic–inorganic perovskite materials provide noteworthy compact systems that could offer ground-breaking architectures for dynamic operations and advanced engineering in high-performance energy-harvesting optoelectronic devices. Here, we demonstrate a highly effective self-powered perovskite-based photodiode with an electron-blocking hole-transport layer (NiOx). A high value of responsivity (R = 360 mA W−1) with good detectivity (D = 2.1 × 1011 Jones) and external quantum efficiency (EQE = 76.5%) is achieved due to the excellent interface quality and suppression of the dark current at zero bias voltage owing to the NiOx layer, providing outcomes one order of magnitude higher than values currently in the literature. Meanwhile, the value of R is progressively increased to 428 mA W−1 with D = 3.6 × 1011 Jones and EQE = 77% at a bias voltage of − 1.0 V. With a diode model, we also attained a high value of the built-in potential with the NiOx layer, which is a direct signature of the improvement of the charge-selecting characteristics of the NiOx layer. We also observed fast rise and decay times of approximately 0.9 and 1.8 ms, respectively, at zero bias voltage. Hence, these astonishing results based on the perovskite active layer together with the charge-selective NiOx layer provide a platform on which to realise high-performance self-powered photodiode as well as energy-harvesting devices in the field of optoelectronics.


2021 ◽  
Author(s):  
Atul kumar

Abstract Fill factor (FF) deficit and stability is a primary concern with the perovskite solar cell. Resistance values and band alignment at junction interface in perovskite are causing low fill factor. Moisture sensitivity of methylammonium lead halide perovskite is causing a stability issue. We tried to solve these issues by using inorganic hole transport layer (HTL). FF is sensitive to the band offset values. We study the band alignment/band offset effect at the Perovskite /HTL junction. Inorganic material replacing Spiro-MeOTAD can enhance the stability of the device by providing an insulation from ambient. Our simulation study shows that the earth abundant p-type chalcogenide materials of SnS as HTL in perovskite is comparable to Spiro-MeOTAD efficiency.


Author(s):  
Seyyedreza HOSSEİNİ ◽  
Nagihan DELİBAŞ ◽  
Mahsa BAHRAMGOUR ◽  
Alireza TABATABAEİ MASHAYEKH ◽  
Aligholi NİAİE

2018 ◽  
Vol 2018 ◽  
pp. 1-6 ◽  
Author(s):  
Jeongmin Lim ◽  
Seong Young Kong ◽  
Yong Ju Yun

Inorganic-organic mesoscopic solar cells become a promising alternative for conventional solar cells. We describe a CH3NH3PbI3 perovskite-sensitized solid-state solar cells with the use of different polymer hole transport materials such as 2,2′,7,7′-tetrakis-(N,N-di-p-methoxyphenyl-amine)-9,9′-spirobifluorene (spiro-OMeTAD), poly(3-hexylthiophene-2,5-diyl) (P3HT), and poly[[4,8-bis[(2-ethylhexyl)oxy]benzo[1,2-b:4,5-b′]dithiophene-2,6-diyl][3-fluoro-2-[(2-ethylhexyl)carbonyl]thieno[3,4-b]thiophenediyl]] (PTB7). The device with a spiro-OMeTAD-based hole transport layer showed the highest efficiency of 6.9%. Interestingly, the PTB7 polymer, which is considered an electron donor material, showed dominant hole transport behaviors in the perovskite solar cell. A 200 nm thin layer of PTB7 showed comparatively good efficiency (5.5%) value to the conventional spiro-OMeTAD-based device.


2018 ◽  
Vol 3 (5) ◽  
pp. 1122-1127 ◽  
Author(s):  
Lukas Wagner ◽  
Sijo Chacko ◽  
Gayathri Mathiazhagan ◽  
Simone Mastroianni ◽  
Andreas Hinsch

2018 ◽  
Vol 6 (15) ◽  
pp. 4106-4113 ◽  
Author(s):  
Jong Hwa Lee ◽  
Young Yun Kim ◽  
O Ok Park

PTB7:PC71BM-based flexible solar cell fabricated by stamping transfer of PEDOT:PSS hole transport layer with polymer nanoparticles. This photovoltaic cell exhibited enhanced performance and mechanical durability as compared with those of the spin-coated cells.


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