Metal-Free Interconnecting Layer for Monolithic Perovskite/Organic Tandem Solar Cells with Enhanced Outdoor Stability

Xu, Han
Merino, Luis Torres
Koc, Mehmet
Aydin, Erkan
Zhumagali, Shynggys
Haque, Md Azimul
Yazmaciyan, Aren
Sharma, Anirudh
Villalva, Diego Rosas
Hernandez, Luis Huerta
De Bastiani, Michele
Babics, Maxime
Isikgor, Furkan H.
De Wolf, Stefaan
Yerci, Selçuk
Troughton, Joel
Baran, Derya
Photovoltaics with monolithically connected tandem architectures have the potential to achieve high efficiencies owing to enhanced spectral absorption and reduced thermal losses. To achieve this, photoactive layers with complementary absorption and interconnecting layers, which are robust, transparent, and energetically suitable, are essential. Here, we investigate a strategy to create an efficient, highly transparent, ohmic, and chemically robust interconnecting layer based on atomic layer-deposited tin oxide (SnO2) and solution-processed diluted poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS), eliminating the need of widely reported parasitically absorbing metal recombination layers. Monolithic perovskite/organic tandem devices built on a metal-free interface (SnO2/PEDOT:PSS) compared to its counterpart (SnO2/metal/PEDOT:PSS) show no significant difference in PCE, but a remarkable enhancement in photostability. Furthermore, tandem solar cells were tested under outdoor conditions for 2 weeks, showing improved stability and solar power conversion than single-junction perovskite and organic devices, underscoring the potential of monolithic tandem solar cells.


Maximizing the performance of single and multijunction MA and lead-free perovskite solar cell
Azadinia, M.; Ameri, Mohsen; Ghahrizjani, R.T.; Fathollahi, M. (2021-06-01)
Finding a highly stable and appropriate perovskite solar cell with optimum design parameters is crucial for being included as the top cell in tandem structure, with Si as the bottom cell, to realize the power conversion efficiencies (PCEs) over the limits imposed by Shockley-Queisser theory. Here, we quantize the performance of methylammonium (MA) and lead (Pb)-free all-inorganic cesium tin-germanium triiodide (CsSnxG1-xI3) by combining CsSnI3 (Eg = 1.31 eV) and CsGeI3 (Eg = 1.63 eV) perovskites for standal...
Structural characterization of intrinsic a-Si:H thin films for silicon heterojunction solar cells
Pehlivan, O.; Yilmaz, O.; Kodolbas, A. O.; Duygulu, O.; Tomak, Mehmet (2013-01-01)
We have utilized ex-situ spectroscopic ellipsometry and HRTEM to characterize the optical and structural properties of intrinsic a-Si:H thin layer that plays a key role for the improvement of the open circuit voltage in silicon heterojunction solar cells. Intrinsic a-Si:H films were deposited on (100) p-type CZ silicon wafers by using Plasma Enhanced Chemical Vapor Deposition (PECVD) technique at 225 degrees C substrate temperature and deposition time ranges from 15 s to 1800 s. Observed changes in the imag...
Three-Phase Inverter Topologies for Grid-Connected Photovoltaic Systems
Özkan, Ziya; Hava, Ahmet Masum (2014-05-21)
In this paper, the energy conversion efficiency (ECE) and cost characteristics of three-phase photovoltaic (PV) inverters (3P-PVIs) are studied comprehensively based on the operating principles of topologies and with respect to various performance indicators such as semiconductor device count and utilization factors, semiconductor efficiency (SE), dc-bus capacitor and filter inductor voltage/current ripple factors. The evaluation of topologies are based on datasheet parameters and analytical results are pro...
Optical light management by self-arrangement of inverted tetragonal pyramids on the silicon surface through copper-assisted etching technique in a single step
Donercark, Ergi; Çolakoğlu, Tahir; Terlemezoğlu, Makbule; Abak, Musa Kurtulus; Çiftpınar, Emine Hande; Bek, Alpan; Turan, Razit (2022-09-01)
Developing efficient light trapping techniques plays a crucial role in improving silicon (Si) solar cell parameters by decreasing optical losses. Herein, four various surface morphologies by copper-assisted chemical etching (Cu-ACE) technique under various process conditions were developed. The etching solution is composed of copper nitrate trihydrate (Cu[NO3](2)), hydrofluoric acid, and hydrogen peroxide in deionized water. The systematic correlation study on the molarity of the chemical ingredients reveal...
Physical–chemical hybrid transiency: A fully transient li-ion battery based on insoluble active materials
CHEN, Yuanfen; JAMSHIDI, Reihaneh; WHITE, Kathryn; Çınar, Simge; GALLEGOS, Emma; HASHEMI, Nastaran; Montazami, Reza (2016-10-15)
Transient Li-ion batteries based on polymeric constituents are presented, exhibiting a twofold increase in the potential and approximately three orders of magnitude faster transiency rate compared to other transient systems reported in the literature. The battery takes advantage of a close variation of the active materials used in conventional Li-ion batteries and can achieve and maintain a potential of >2.5 V. All materials are deposited form polymer-based emulsions and the transiency is achieved through a...
Citation Formats
H. Xu et al., “Metal-Free Interconnecting Layer for Monolithic Perovskite/Organic Tandem Solar Cells with Enhanced Outdoor Stability,” ACS APPLIED ENERGY MATERIALS, vol. 5, no. 11, pp. 14035–14044, 2022, Accessed: 00, 2023. [Online]. Available: