Investigation of Thermally Induced Degradation in CH3NH3PbI3 Perovskite Solar Cells using In-situ Synchrotron Radiation Analysis

Kim, Nam-Koo; Min, Young Hwan; Noh, Seokhwan; Cho, Eunkyung; Jeong, Gitaeg; Joo, Minho; Ahn, Seh-Won; Lee, Jeong Soo; Kim, Seongtak; Ihm, Kyuwook; Ahn, Hyungju; Kang, Yoonmook; Lee, Hae‐Seok; Kim, Dong Hwan

doi:10.1038/s41598-017-04690-w

Cited by 197 publications

(124 citation statements)

References 43 publications

Supporting

Mentioning

118

Contrasting

Order By: Relevance

“…The most notable remaining hurdle that must be overcome for these compounds to be viable UPV is their stability to environmental factors [11][12][13]. MHPs and related compounds are known to degrade upon exposure to moisture [14], oxygen [15], ultraviolet radiation [16] and excessive heat [17]. For utility scale photovoltaic power generation to be economically viable, solar cells need to remain operational for >25 years in ambient conditions, and they need to be stable at temperatures ranging from −4°C to 85°C [18,19].…”

Section: Introductionmentioning

confidence: 99%

Thermal stability of mobility in methylammonium lead iodide

et al. 2019

View full text Add to dashboard Cite

Metal halide perovskites (MHPs) are a fascinating class of photovoltaic materials; possessing distinctive optoelectronic properties and simple processing routes. The most significant remaining barrier to commercialization is their poor stability under ambient conditions. While the stability of electronic parameters in this class of material has been studied extensively, to date the overwhelming majority of such studies have been carried out using PV devices. The presence of electrodes and transport layers in this approach involves both implicit encapsulation, and modification of interface properties. To develop an extensive understanding of environmental stability of electronic properties in MHPs, it is crucial to study the electronic properties of the material in isolation, rather than in a finished device. In this work, we have studied the thermal stability of electronic properties of solution processed methylammonium lead iodide (MAPbI 3 ). MAPbI 3 thin films were subjected to extended periods of elevated temperatures before their electronic properties were probed using time-resolved microwave conductivity (TRMC), a contactless technique enabling extraction of a proxy for the material's mobility, without the need to form a device. The films were analysed with x-ray absorption spectroscopy (XAS) to study the impact of temperature on film microstructure. We observed an increase in average Pb-I bond length with increased annealing temperature.

show abstract

Section: Introductionmentioning

confidence: 99%

Thermal stability of mobility in methylammonium lead iodide

et al. 2019

View full text Add to dashboard Cite

show abstract

“…According to recent studies performed by Kim and his co-workers on exposure to temperatures greater than 100 • C, MAPbI 3 decomposes into PbI 2 , CH 3 I, and NH 3 . PbI 2 remains whereas CH 3 I, and NH 3 evaporate [129]. They also elucidated that prolonged exposure to 80 • C results in degradation of perovskite.…”

Section: Thermal Degradationmentioning

confidence: 91%

Analysing the Prospects of Perovskite Solar Cells within the Purview of Recent Scientific Advancements

et al. 2018

View full text Add to dashboard Cite

Abstract:For any given technology to be successful, its ability to compete with the other existing technologies is the key. Over the last five years, perovskite solar cells have entered the research spectrum with tremendous market prospects. These cells provide easy and low cost processability and are an efficient alternative to the existing solar cell technologies in the market. In this review article, we first go over the innovation and the scientific findings that have been going on in the field of perovskite solar cells (PSCs) and then present a short case study of perovskite solar cells based on their energy payback time. Our review aims to be comprehensive, considering the cost, the efficiency, and the stability of the PSCs. Later, we suggest areas for improvement in the field, and how the future might be shaped.

show abstract

“…Planar PSCs using the CuSCN HTL or the CuSCN/P3HT HTL rapidly lose their initial efficiency against Energies 2020, 13, 2059 7 of 12 85 • C thermal stress, mainly due to the interaction between CuSCN and perovskite. This phenomenon could be related to a structural change of perovskite surface upon heating at 85 • C [58], which could be accelerated by Cu(II) ions through a reaction with halide ions and form copper halide defects. Furthermore, due to the constraints on the CuSCN precursor solvent (requirement of polar solvents), the interaction of such solvents with perovskite surface during deposition of HTM leads to increased defects on the perovskite layer and accelerates the thermal decomposition.…”

Section: Sno2/perovskite/cuscn/aumentioning

confidence: 99%

“…Energies 2020, 13, x FOR PEER REVIEW 7 of 12 heating at 85 °C [58], which could be accelerated by Cu(II) ions through a reaction with halide ions and form copper halide defects. Furthermore, due to the constraints on the CuSCN precursor solvent (requirement of polar solvents), the interaction of such solvents with perovskite surface during deposition of HTM leads to increased defects on the perovskite layer and accelerates the thermal decomposition.…”

Section: Sno2/perovskite/cuscn/aumentioning

confidence: 99%

Polymer/Inorganic Hole Transport Layer for Low-Temperature-Processed Perovskite Solar Cells

et al. 2020

View full text Add to dashboard Cite

In the search for improvements in perovskite solar cells (PSCs), several different aspects are currently being addressed, including an increase in the stability and a reduction in the hysteresis. Both are mainly achieved by improving the cell structure, employing new materials or novel cell arrangements. We introduce a hysteresis-free low-temperature planar PSC, composed of a poly(3-hexylthiophene) (P3HT)/CuSCN bilayer as a hole transport layer (HTL) and a mixed cation perovskite absorber. Proper adjustment of the precursor concentration and thickness of the HTL led to a homogeneous and dense HTL on the perovskite layer. This strategy not only eliminated the hysteresis of the photocurrent, but also permitted power conversion efficiencies exceeding 15.3%. The P3HT/CuSCN bilayer strategy markedly improved the life span and stability of the non-encapsulated PSCs under atmospheric conditions and accelerated thermal stress. The device retained more than 80% of its initial efficiency after 100 h (60% after 500 h) of continuous thermal stress under ambient conditions. The performance and durability of the PSCs employing a polymer/inorganic bilayer as the HTL are improved mainly due to restraining perovskite ions, metals, and halides migration, emphasizing the pivotal role that can be played by the interface in the perovskite-additive hole transport materials (HTM) stack.Energies 2020, 13, 2059 2 of 12 transport materials (HTMs) have been considered so far, providing different final efficiencies, such as: (i) 2,2,7,7-tetrakis(N,N-di-p-methoxyphenylamine)-9,9-spirobifluorene (Spiro-OMeTAD) with a PCE of 22% [6]; (ii), poly(triarylamine) (PTAA) with a PCE of 20% [7]; (iii) poly(3,4ethylenedioxythiophene):polystyrenesulfonate (PEDOT:PSS) with a PCE of 15% [8]; and iv) P3HT with PCE reaching 19.25% [9].There are, however, several limitations in using these kinds of materials, such as excessive price, inefficient electron-blocking capability, and low chemical stability [10]. In this respect, inorganic HTLs seem to be a convincing alternative, with materials such as NiO [11], CuI [12,13] or CuSCN [14] being potential candidates.CuSCN is a p-type inorganic semiconductor with a wide bandgap (3.4-3.9eV) [15], high hole mobility, well-aligned work function [16], good thermal stability, high optical transparency and attractive mechanical properties [17,18]. The collection of the impressive physical and chemical properties, together with its low cost and commercial availability, has made CuSCN a very suitable material to be employed as an HTL. A PCE of more than 20% has been reported for PSCs with a conventional mesostructure TiO 2 ETL and CuSCN-reduced graphene oxide (rGO) HTL [19]. However, for planar n-i-p structures, using the atomic layer deposited TiO 2 ETL and CuSCN HTL, a maximum PCE of 12.7% has been achieved so far [20]. In order to improve the open-circuit voltage in CuSCN-based PSCs, various functional molecules have been introduced between the perovskite layer and copper on the surface of CH 3 NH 3 PbI 3 layers to pass...

show abstract

Investigation of Thermally Induced Degradation in CH3NH3PbI3 Perovskite Solar Cells using In-situ Synchrotron Radiation Analysis

Cited by 197 publications

References 43 publications

Thermal stability of mobility in methylammonium lead iodide

Thermal stability of mobility in methylammonium lead iodide

Analysing the Prospects of Perovskite Solar Cells within the Purview of Recent Scientific Advancements

Polymer/Inorganic Hole Transport Layer for Low-Temperature-Processed Perovskite Solar Cells

Contact Info

Product

Resources

About