Enhanced Passivation Properties of a-Si:H and Reactive ITO Sputtering for SHJ Solar Cells

Donercark, Ergi
Guler, Secil
Çiftpınar, Emine Hande
Kabacelik, Ismail
Turan, Raşit
Enhancement of the conversion efficiency of silicon solar cells is crucial for the improvement of renewable electricity resources. The device properties such as minority carrier lifetime, series resistance, contact resistance and optical properties should be improved simultaneously to achieve higher photo conversion efficiencies. We use industry compatible processes flow to fabricate large-area silicon heterojunction (SHJ) solar cells combined with reactive ITO sputtering. The passivation properties of a-Si:H layer was improved by hydrogen plasma treatment resulting in a lower interface defect density and higher "H" content in the deposited thin a-Si:H layer. Moreover, carrier density, mobility and resistivity of ITO layer was analyzed and the best deposition condition of ITO is integrated to SHJ solar cell process sequence. Contact resistivity between ITO and low temperature silver paste was decreased by optimized drying and curing temperature parameters. In large- area SHJ solar cell, we have achieved conversion efficiency of 20.8%.
47th IEEE Photovoltaic Specialists Conference (PVSC)


Bağ Çelik, Esra; Günbaş, Emrullah Görkem; Yerci, Selçuk; Department of Polymer Science and Technology (2023-2-24)
Perovskite solar cells (PSCs) have been widely studied for their potential to revolutionize the solar energy industry. Unfortunately, the commercialization of PSCs remains challenging due to the limitation of high-performance, low-cost, and environmentally stable organic hole-transport materials (HTMs). For this reason, the development of a new generation HTMs is strongly anticipated. Hole transport material (HTM) is one of the critical components in perovskite solar cells, which is responsible for transpor...
Alternative surface texturing, passivation and charge selective contacts for crystalline silicon solar cells
Sarıgül Duman, Elif; Turan, Raşit; Yerci, Selçuk; Department of Micro and Nanotechnology (2022-9-2)
This study focuses on realizing three crucial steps in silicon solar cell manufacturing by utilizing alternative methods. Black silicon is of interest as an alternative surface texturing method for achieving enhanced light trapping and reduced reflection of the crystalline silicon solar cell. Black silicon fabrication via the inductively coupled plasma reactive ion etching method and the feasibility of black silicon solar cells were investigated. Reduced optical reflectance was achieved with a total weighte...
Design of high-efficiency dye-sensitized nanocrystalline solar cells
Yavuz, Halil İbrahim; Özenbaş, Ahmet Macit; Erçelebi, Ayşe Çiğdem; Department of Metallurgical and Materials Engineering (2014)
Nanocrystalline dye sensitized solar cells (DSSC) technology continues to develop as a better alternative to the silicon based solar cells, which are commercialized. This study aims at finding low cost and highly efficient DSSC design and production methods via examination of effects of both photoanode structure and photon-electron generation mechanism on photoanode layers. This will contribute to the commercialization of DSSC technology. Photoanode structure is examined in four groups; transparent conducti...
Improvement of silicon heterojunction solar cell performance with new surface structure and wide band gap carrier selective layers
Dönerçark, Ergi; Turan, Raşit; Yerci, Selçuk; Department of Micro and Nanotechnology (2021-10-15)
The photovoltaic (PV) industry is dominated by silicon-based solar cells owing to the abundance of silicon and its full-fledged technology. The main road for the PV industry points out to enhance the conversion efficiency of solar cells while decreasing production costs, which is crucial for improving renewable energy market share. The silicon heterojunction solar cells (SHJ) are receiving attention on this road map due to their higher conversion efficiencies, simple process flow, and low-temperature fabric...
Improvement of multiband absorption with different technics (graphene, ito, and hole) for metamaterial absorber at optical frequencies
Mulla, Batuhan; Sabah, Cumali (2018-10-01)
Three absorption improvement techniques are numerically applied to a multiband metamaterial absorber design for solar energy harvesting. These techniques are the following: the reshaping of the back metallic plate, the integrating of graphene sheets, and the utilizing of indium tin oxide (ITO), in the design. Based on numerical simulation results, each of these methods has the capacity to enhance total absorption rates. In addition to the enhancement in the total absorption rates, new absorption peaks are a...
Citation Formats
E. Donercark, S. Guler, E. H. Çiftpınar, I. Kabacelik, and R. Turan, “Enhanced Passivation Properties of a-Si:H and Reactive ITO Sputtering for SHJ Solar Cells,” presented at the 47th IEEE Photovoltaic Specialists Conference (PVSC), ELECTR NETWORK, 2020, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/93943.