Impact of epitaxial growth at the heterointerface of a-Si:H/c-Si solar cells

Fujiwara, Hiroyuki; Kondo, Michio
January 2007
Applied Physics Letters;1/1/2007, Vol. 90 Issue 1, p013503
Academic Journal
The authors have demonstrated that interface structures of heterojunction solar cells consisting of hydrogenated amorphous silicon (a-Si:H) and crystalline silicon (c-Si) have quite large impact on the solar cell performance. In particular, unintentional epitaxial growth was found to occur during an intended a-Si:H i-layer growth on c-Si in plasma-enhanced chemical vapor deposition (PECVD). By the formation of the epitaxial layer at the interface, the solar cell efficiency decreases significantly. Their result shows that the epitaxial layer is formed rather easily in PECVD, even without the presence of H2 gas, and may have affected many previous studies on a-Si:H/c-Si solar cells seriously.


Related Articles

  • A simple merocyanine tandem solar cell with extraordinarily high open-circuit voltage. Steinmann, V.; Kronenberg, N. M.; Lenze, M. R.; Graf, S. M.; Hertel, D.; Bürckstümmer, H.; Würthner, F.; Meerholz, K. // Applied Physics Letters;11/7/2011, Vol. 99 Issue 19, p193306 

    We present a highly efficient tandem solar cell based on a merocyanine dye, containing two identical subcells connected in series. A recombination layer of Al/MoO3 was used. Due to a substantial improvement of the fill factor, the overall efficiency of the tandem cell was even higher than that...

  • High efficiency silicon nanohole/organic heterojunction hybrid solar cell. Lei Hong; Xincai Wang; Hongyu Zheng; Lining He; Hao Wang; Hongyu Yu // Applied Physics Letters;2/3/2014, Vol. 104 Issue 5, p053104-1 

    High efficiency hybrid solar cells are fabricated based on silicon with a nanohole (SiNH) structure and poly (3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS). The SiNH structure is fabricated using electroless chemical etching with silver catalyst, and the heterojunction is formed...

  • Analysis of InxGa1-xN/Si p-n heterojunction solar cells and the effects of spontaneous and piezoelectric polarization charges. Zheng, Yangdong; Mihara, Akihiro; Yamamoto, Akio // Applied Physics Letters;10/7/2013, Vol. 103 Issue 15, p153509 

    The band structures, current-voltage characteristics under solar illumination, and photovoltaic (PV) properties of InxGa1-xN/Si p-n heterojunction solar cells (SCs), as well as the effects of spontaneous and piezoelectric polarization (Psp-PPZ) induced charges are investigated theoretically and...

  • Temperature Dependent Current-voltage Characteristics of P-type Crystalline Silicon Solar Cells Fabricated Using Screen-printing Process. Hyun-Jin Song; Won-Ki Lee; Chel-Jong Choi // Journal of Energy Technologies & Policy;2013, Vol. 3 Issue 11, p27 

    We have fabricated p-type crystalline silicon (Si) solar cells using screen-printing process and investigated their electrical properties. Ph screen printing process led to the uniform formation of n+ emitter. As a result of interaction between Ph-dopant paste and Si substrate, a phosphosilicate...

  • An extensively valid and stable method for derivation of all parameters of a solar cell from a single current-voltage characteristic. Ishibashi, Ken-ichi; Kimura, Yasuo; Niwano, Michio // Journal of Applied Physics;May2008, Vol. 103 Issue 9, p094507 

    It is important to precisely estimate values of all solar cell parameters in order to analyze the performance of a solar cell. We have proposed a stable method for the derivation of solar cell parameters from a single I-V curve under only the valid assumption for a general solar cell. Our method...

  • Improved bulk heterojunction organic solar cells employing C70 fullerenes. Pfuetzner, Steffen; Meiss, Jan; Petrich, Annette; Riede, Moritz; Leo, Karl // Applied Physics Letters;6/1/2009, Vol. 94 Issue 22, p223307 

    We show that the fullerene C70 is suitable to replace fullerene C60, which is commonly used as electron transporter and acceptor in small-molecule organic solar cells. It is shown that the higher absorption of C70 leads to high external quantum efficiencies of over 50% in the spectral range of...

  • Effect of metal electrodes on the performance of polymer:fullerene bulk heterojunction solar cells. Mihaletchi, V. D.; Koster, L. J. A.; Blom, P. W. // Applied Physics Letters;8/9/2004, Vol. 85 Issue 6, p970 

    An increase in the workfunction of the metal top electrode leads to a reduction of the open-circuit voltage, short-circuit current, and power conversion efficiency of organic bulk-heterojunction solar cells. It has been demonstrated that the photocurrent obtained from an active layer comprised...

  • Relationship between trapping density and open circuit voltage in multicrystalline silicon solar cells. He Wang; Hong Yang; Hongcai Wu; Huacong Yu // Journal of Materials Science;Apr2006, Vol. 41 Issue 7, p1905 

    Minority carrier trapping frequently exists in solar grade multicrystalline silicon. At low illumination levels, the effect of trapping centers on open circuit voltage of multicrystalline silicon solar cells is dependent on the trap density and illumination level. In this paper, the relation...

  • Enhanced quantum efficiency of Ge solar cells by a two-dimensional photonic crystal nanostructured surface. Prieto, I.; Galiana, B.; Postigo, P. A.; Algora, C.; Martínez, L. J.; Rey-Stolle, I. // Applied Physics Letters;5/11/2009, Vol. 94 Issue 19, p191102 

    A single-junction germanium solar cell with a photonic crystal nanostructured surface has been developed. The solar cell comprises a Ge p-n junction and an InGaP window layer. The InGaP window layer has been nanopatterned with an extended photonic crystal structure consisting on a triangular...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics