The dual role of ozone-treated aluminum doped zinc oxide for CH3NH3PbI3 solar cells

Chouhan, Arun Singh; Jasti, Naga Prathibha; Avasthi, Sushobhan

doi:10.1016/j.orgel.2018.12.030

Cited by 12 publications

(13 citation statements)

References 41 publications

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“…As shown in Figure 11 a,b, the inserted potential line suggests the CPD of both ITO and Cl‐FAPbI 3 are ≈1.2 V. The difference of energy level in two materials is too small to form a built‐in potential. Different from the above view of the energy band structure at the TCO/perovskite interface, however Chouhan and Avasthi suggested that AZO can function as effective ETL and transparent electrode in their ETL‐free PSC with AZO/MAPbI 3 /spiro‐MeOTAD/Au structure . Electronic band diagram derived from the UPS measurement shows that AZO/perovskite is a carrier‐selective interface that can block holes but allows transport of electrons.…”

Section: Working Principle and Factors Influencing Performancementioning

confidence: 91%

“…[82] Further, by KPFM measurement, the relative values of effective work function of ITO and Cl-FAPbI 3 can be determined by the contact potential difference (CPD): V CPD = (φ tip − φ sample )/e. [113] Electronic band diagram derived from the UPS measurement shows that AZO/perovskite is a carrier-selective interface that can block holes but allows transport of electrons. φ tip can be seen as a constant value with the same scanning tip during the measurement.…”

Section: Wwwadvancedsciencenewscommentioning

confidence: 99%

Section: Work Function Of Tco and Back Electrodementioning

confidence: 99%

Section: Working Principle and Factors Influencing Performancementioning

confidence: 99%

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Simple, Robust, and Going More Efficient: Recent Advance on Electron Transport Layer‐Free Perovskite Solar Cells

Huang

2019

Advanced Energy Materials

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Perovskite solar cells (PSCs) have shown great potential for photovoltaic applications with their unprecedented power conversion efficiency advancement. Such devices generally have a complex structure design with high temperature processed TiO2 as the electron transport layer (ETL). Further careful design of device configuration to fully tap the potentials of perovskite materials is expected. Particularly, for the practical application of PSCs, it is crucial to simplify their device structures thus the associated manufacturing process and cost while maintaining their efficiency to be comparable with the conventional devices. But how simple is simple? ETL‐free PSCs promise the simplest structured, thus simple manufacturing processes and low cost large area PSCs in practical applications. They can also help the further exploration of the great potential of perovskite materials and understanding the working principle of PSCs. Within this review, the evolution of the PSC is outlined by discussing the recent advances in the simplification of device configuration and processes for cost effective, highly efficient, and robust PSCs, with a focus on ETL‐free PSCs. Their advancement, key issues, working mechanism, existing problems, and future performance enhancements. This review aims to promote the future development of low cost and robust ETL‐free PSCs toward more efficient power output.

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Section: Working Principle and Factors Influencing Performancementioning

confidence: 91%

Section: Wwwadvancedsciencenewscommentioning

confidence: 99%

Section: Work Function Of Tco and Back Electrodementioning

confidence: 99%

Section: Working Principle and Factors Influencing Performancementioning

confidence: 99%

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Simple, Robust, and Going More Efficient: Recent Advance on Electron Transport Layer‐Free Perovskite Solar Cells

Huang

2019

Advanced Energy Materials

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“…In this context, atomic layer deposition (ALD) has been reported to form ultrathin and dense films in a precisely controlled way by controlling the number of specified reaction cycles between diethyl zinc (DEZ), water and trimethylaluminum (TMA). [57,58] The applications of ALD-AZO films in PSCs mostly concern examples where AZO was employed solely as the transparent conducting electrode [52,59,60] or is deposited on top of the perovskite layer. [18,61] However, the use of ALD-grown AZO as an ETL in the planar PSC architecture is relatively rare.…”

Section: Introductionmentioning

confidence: 99%

Atomic Layer Engineering of Aluminum‐Doped Zinc Oxide Films for Efficient and Stable Perovskite Solar Cells

Kruszyńska

Ozkaya

Surucu

et al. 2022

Adv Materials Inter

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promising light absorber materials, demon strating low-cost solution processing, ease of fabrication, and outstanding optoelectronic properties. [1,2] Since the first report on the perovskite solar cells (PSCs) employing methylammonium lead iodide (MAPbI 3 ), [3] their power conversion efficiency (PCE) has now exceeded 25% for small-area cells. [4,5] The high efficiency of PSCs is achieved by tuning the perovskite layer through compositional engineering, [6][7][8] surface passivation, [9][10][11][12][13] and/or by using various additives. [14][15][16] Besides component engineering of the perovskite layer, a lot of works have been devoted to the development of efficient charge transport layers. [17][18][19][20][21] Particularly, the electron transport layers (ETLs) play an important role in realizing efficient and stable PSCs. [22,23] Thus far, titanium dioxide (TiO 2 ) is a widely applied ETL in PSCs but it suffers from low conductivity and high surface defect density. [24] Among alternative ETLs, zinc oxide (ZnO) has been regarded as a convenient candidate due to its high electron mobility and well-matched energy level with perovskite material. [25,26] This Atomic layer deposition (ALD) has been considered as an efficient method to deposit high quality and uniform thin films of various electron transport materials for perovskite solar cells (PSCs). Here, the effect of deposition sequence in the ALD process of aluminum-doped zinc oxide (AZO) films on the performance and stability of PSCs is investigated. Particularly, the surface of AZO film is terminated by diethylzinc (DEZ)/H 2 O (AZO-1) or trimethylaluminum (TMA)/H 2 O pulse (AZO-2), and investigated with surface-sensitive X-ray photoelectron spectroscopy technique. It is observed that AZO-2 significantly enhances the thermal stability of the upcoming methylammonium lead iodide (MAPbI 3 ) layer and facilitates charge transport at the interface as evidenced by photoluminescence spectroscopes and favorable interfacial band alignment. Finally, planar-type PSC with AZO-2 layer exhibits a champion power conversion efficiency of 18.09% with negligible hysteresis and retains 82% of the initial efficiency after aging for 100 h under ambient conditions (relative humidity 40 ± 5%). These results highlight the importance of atomic layer engineering for developing efficient and stable PSCs.

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Simulation‐Based Performance Analysis of Lead‐Free Bismuth Perovskite Solar Cells: A Comparative Study of Cs₃Bi₂I₉ and (CH₃NH₃)₃Bi₂I₉ ‐based Perovskite Solar Cells

Jayawardane,

Akmal,

Jayaneththi

et al. 2024

Advcd Theory and Sims

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Perovskite solar cells (PSCs) have emerged as promising candidates in PV research due to their exceptional photovoltaic properties. However, the toxicity and environmental concerns associated with lead‐based perovskites have led to the exploration of lead‐free alternatives. In this study, the performance of lead‐free bismuth PSCs, specifically PSCs based on Cesium Bismuth Iodide (Cs3Bi2I9) and Methyl Ammonium Bismuth Iodide (MA3Bi2I9), is investigated. Numerical simulations using the solar cell capacitance simulator (SCAPS) are conducted to comprehensively analyze the influence of key parameters, including the band‐to‐band radiative recombination rate, the absorber layer defect density, the absorber layer/electron transport layer (ETL) interface defect density, the absorber layer/hole transport layer interface (HTL) defect density, operating temperatures, and series and shunt resistances, and to optimize the proposed PSCs accordingly. The simulation results demonstrate a significant impact of these key parameters on the performance of Cs3Bi2I9 and MA3Bi2I9 PSCs. The optimized Cs3Bi2I9‐based PSC exhibited notable performance characteristics, including a PCE of 13.81%, a Voc of 1.16 V, a Jsc of 18.14 mA cm−2, and FF of 65.51%. In contrast, the MA3Bi2I9‐based PSC demonstrated relatively lower performance, with a PCE of 11.82%, Voc of 1.14 V, Jsc of 18.06 mA cm−2, and FF of 57.33%. The study on the defect density at the interfaces revealed the performance of PSCs is predominantly influenced by defects at the front interface (ETL/Absorber) rather than the rear interface (HTL/Absorber). These results provide valuable insights for the experimental design and optimization of lead‐free bismuth PSCs.

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The dual role of ozone-treated aluminum doped zinc oxide for CH3NH3PbI3 solar cells

Cited by 12 publications

References 41 publications

Simple, Robust, and Going More Efficient: Recent Advance on Electron Transport Layer‐Free Perovskite Solar Cells

Simple, Robust, and Going More Efficient: Recent Advance on Electron Transport Layer‐Free Perovskite Solar Cells

Atomic Layer Engineering of Aluminum‐Doped Zinc Oxide Films for Efficient and Stable Perovskite Solar Cells

Simulation‐Based Performance Analysis of Lead‐Free Bismuth Perovskite Solar Cells: A Comparative Study of Cs₃Bi₂I₉ and (CH₃NH₃)₃Bi₂I₉ ‐based Perovskite Solar Cells

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The dual role of ozone-treated aluminum doped zinc oxide for CH3NH3PbI3 solar cells

Cited by 12 publications

References 41 publications

Simple, Robust, and Going More Efficient: Recent Advance on Electron Transport Layer‐Free Perovskite Solar Cells

Simple, Robust, and Going More Efficient: Recent Advance on Electron Transport Layer‐Free Perovskite Solar Cells

Atomic Layer Engineering of Aluminum‐Doped Zinc Oxide Films for Efficient and Stable Perovskite Solar Cells

Simulation‐Based Performance Analysis of Lead‐Free Bismuth Perovskite Solar Cells: A Comparative Study of Cs3Bi2I9 and (CH3NH3)3Bi2I9 ‐based Perovskite Solar Cells

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Simulation‐Based Performance Analysis of Lead‐Free Bismuth Perovskite Solar Cells: A Comparative Study of Cs₃Bi₂I₉ and (CH₃NH₃)₃Bi₂I₉ ‐based Perovskite Solar Cells